This testing standard was created by industry leaders (including Sea to Summit) wanting to achieve two things:There have been 188 pads added and 52 pads removed. Their innovative design of this pad allows for a 4. R-Value: 5+. Temperature ratings determine how much a sleeping bag can protect you from the cold. 7. . Philip Werner’s Section Hiker blog Sleeping Pad R Values. Gender. Price: $50 Weight: 15 oz. SectionHiker. Sea to Summit's Ether Light XT does everything you'll want from a sleeping pad. Sale Coming Soon. Added warmth and a shorter length for three-season backcountry adventures. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 0, this is ready for just about any camping scenario. . 95 – to $199. Ionosphere 5 Sleep Mat (550g) £170. 3, which is great considering the simplicity and cost of this sleeping pad compared to others with similar ratings. 0 and 3. This design feature is one of the reasons that Klymit insulated sleeping pads keep you warm in cold winter temperatures but have a different ASTM R rating than before. Klymalite Synthetic insulation: Lightweight, compressible and durable, advanced synthetic insulation in the chambers slows the transfer of air between the top and bottom halves of the pad. Aug 30, 2021 - Learn about the new ASTM standard for sleeping pad testing and what it means for your current and future Therm-a-Rest pad’s R-value. These systems provide a standard way of rating sleeping bags regardless of their brand. 7 Best Wood-Burning Backpacking Stoves. Best Ultralight: Therm-a-Rest Uberlite. REI Co-op Trailmade Self-Inflating Sleeping Pad. intended to be worn primarily for sleeping or activities related to sleep in size 0 through size 14. Curbside Pickup Available NOW! 100% Satisfaction Guarantee. Light, plush and warm, the 3 in. Therm-a-Rest NeoAir XLite NXT ($210) Category: Air pad Weight: 12. 97. 4. 3” it will show you all Big Agnes sleeping pads with an R-Value of 4. 9 to 5. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. ASTM Standard R-Value: Rating Sleeping Pad Insulation; R-Value vs. And there's no way I am sleeping in 20F without it. In this case, the structure is your sleeping pad. 2 This test method is applicable to all types of camping mattresses (for example, inflating air mattress with or. The tester records the firmness rating ILD (25% ILD) after a minute of compression. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. 25 oz as thickness will also vary slightly. 1 with just 4 oz of insulation (11. There’s no data to show a correlation to how the two ratings compare. 1. So, at this point, we can’t yet tell how Klymit’s ratings compare to other pads. Feature-wise, the Puma has two large down. $159. e. 5 in Must Haves Inflatable Foam air Sleep mat Self Inflating air Mattress for Camping cot pad Tent Floors :. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. $39. 0 feels like it lives up to those temperature ratings. Head to a blog for an in-depth explanation. Our award-winning sleeping bags are guaranteed to help you sleep better. 2 – Q-Core SLX & SLX Tent Floor Pad. 1. Membership Pricing: $0. 5cm when unrolled, and packs down to a standard-if somewhat chunky 31 x 21cm roll - with some help from a pair of. 3. So I decided to head on over to one of the places that supposedly 'sets the standards,' you know ASTM international. Product Update — April 2023. You need at least an ASTM R4 sleeping pad (R5 or better preferred) and a 20F ISO minimum rated bag (10F if female using a men's bag). It gives great three-season insulation. 0 - mats aimed at temperatures no lower than 5C. Best Overall. 00 – $210. Coleman. The MegaMat remains a great choice and is pretty well. 5 R-value tested according to the ASTM F3340-18 standard;. Use #SleepOutside or tag us @klymit for a chance to be featured online. Stuff sack included. Head to a blog for an in-depth explanation. 00. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Membership Pricing: $25. Better manufacturers will list the ASTM temperature ratings, which are standardized. This R-value is a determination of a sleeping pad’s thermal resistance to heat loss and is rated on a scale from 1-5, or higher, with 1 being the least insulating and 5 being the most. Yes. Read honest and unbiased product reviews from our users. Add To Cart. The search function is case specific but not case sensitive. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Mountain Equipment Helium 3. Sleeping Pad Length. Pack compact nighttime comfort and support when you have a Coleman® Self-Inflating Pad with Pillow. 2 R-value without the usually associated weight. Therm-a-Rest released the new NeoAir XTherm NXT this year. 24 Find helpful customer reviews and review ratings for Gear Doctors Self Inflating Camping Sleeping Pad for Camping 4. I'd love to see some more columns like fill type, warranty type, etc. 99. 5 4. com : Gear Doctors Self Inflating Camping Sleeping Pad for Camping 4. 5 (ASTM F3340 Standard). With this new testing criteria, the NeoAir's R-value has jumped from 3. Therefore, if we look at the information. 0 rating, you’ll have a total R-value of 6. The Sea-to-Summit Ether Light XT Extreme Sleeping Pad is an insulated inflatable sleeping pad that is 4″ thick and has an R-value of 6. A COCOON liner adds up to *°C to the temperature rating of your sleeping bag. With a slightly elevated head baffle and curved, body-mapped baffling, the NEMO Quasar 3D Insulated Air pad keeps you comfy, even on uneven terrain. Weight: 410g; Size: 51 x 183 x 2cm; Packed size: 51 x 13 x 14cm; ASTM R-Value: 2. This Exped MegaMat Max 15 Duo Sleeping Pad comes with a high R-value of 10. ; Sleep system: Being comfortable at a particular temperature depends on many other variables, especially the R-value of your sleeping. Added temperature Up to 7,0°C *. Best Basecamp. Color : Navy. What is the ASTM F2413-18 rating? The ASTM F2413-18 rating is the most recent standard for protective footwear, outlining the minimum performance criteria for work boots in areas like impact resistance, compression resistance, metatarsal protection, puncture resistance, and electrical hazard protection. Outside of outdoor sleeping pads, flexible polyurethane foams are widely used in such applications as furniture, automobiles, packaging and bedding. Insulated Rectangle Regular:. 6 cm thick mat built for comfort. Some redeeming features added in to complicate the decision making, but ultimately the low level of comfort offered by this pad overshadows many of the high points, such as its extremely light weight, small. Filter: Filter criteria stack as each. Buy Gear Doctors Ultralight 25oz Camping Sleeping pad ApolloAir - Compact, Warm 5. When autocomplete results are available use up and down arrows to review and enter to select. Sleeping Pad Comparison Table----- A few weeks ago I was in the market for a new sleeping pad. The definition of a camp utility blanket, the Stellar Blanket is equally at home in the backyard or the backcountry. Unique, pressure-mapped pattern delivers support and softness. The Dowmat maintains a 3. 5 (rated for 4-seasons) Thickness: 3” Weight: 12. Pad Thickness (in. Learn about types of pads, insulation, R-value and other features. (132) Compare. R-Value & ASTM Standard for Sleeping Mats Explained Insulation won’t be as important when the weather is warm. 9 in (15 cm) of comfortable foam. Moreover, the mattress bears a weight of 440lbs, and Airsoft demonstrated no air leakage or damage during 24-hour static pressure tests. it wouldn't let me use the crosspost feature) . The Comfort Light Insulated sleeping pad is a healthy mix of superb technology that combines lightweight, durable construction, mid-range R-Value, and great pack-ability. It includes thermal insulation, to keep your body warm from the cold winter ground. In my experience, the popular Therm-a-Rest NeoAir XLite takes between 25-30 breaths to inflate, while my other primary sleeping pad (Sea to Summit Women’s Ultralight Insulated Air) takes 10-12. Curbside Pickup Available NOW! 100% Satisfaction Guarantee. Insulation is critical when it. 0, making this sleeping pad best for temps above freezing. Head to a blog for an in-depth explanation. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. I can write more on this if you’re interested. 4. If you are good at taking care of your gear, this is an excellent pad for the price. The Exped Ultra 3R Sleeping Mat is a lightweight inflatable sleeping pad that’s 3 inches thick and has an R-value of 2. 5" Warmth Series PVC-Free Self Inflating Sleep Pad. With an ASTM R-Value of 4. Here is an R-value chart for a sleeping pad. 3 out of 5 stars 118 4 offers from $34. Pad Thickness (in. 99. 9 to 4. Insulation Open-cell foam. Price: $0. The Ether Light XT Air Sleeping Mat is perfect for warm-weather backpackers looking for a quiet, lightweight sleeping pad that offers a. You can also easily use and quickly inflate our sleeping pads. Here are the steps for patching a hole in an inflatable sleeping pad: Gather your repair supplies: Cleaner, a patch or tape, plus an adhesive. But how is density measured? Read on to learn. 4. 9 up to a whopping 5. Want to create a sleep system? Read our Best Budget Sleeping Bags to find a match for you pad. Most women sleep colder than most men, so female campers should consider opting for a pad with a higher R-value. 8 Women’s Warmzone Mat don’t need to be. Both are also 3. The higher the R-value, the more resistant it will be heat flow. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 3 oz. Montbell’s Seamless Down Hugger Sleeping Bag uses spiraled elastic stitching to conform to the sleeper’s body. Curbside Pickup Available NOW! 100% Satisfaction Guarantee. Insulated Air-Filled Sleeping Pad Category Ranking: These ratings are based on the large (25×76) version of the Nemo Tensor Insulated sleeping pad. Look for a comfort rating, buy something that’ll be with a comfort rating around the lowest overnight temperatures you expect. 3. Head to a blog for an in-depth explanation. Add To Cart. Using a standardized test gives the buyer (that's you!) more confidence when comparing R-values between sleeping pads. If you find yourself sleeping cold in temperatures where. Shop for Sleeping Pads at REI - FREE SHIPPING With $50 minimum purchase. 5 oz (6-foot length) Inflation: 25-40 breaths or comes with Pumpsack Lengths: 66”, 72”, 72”-wide, 77” What we liked: lightweight, great insulation and durability What we didn't like: width A perennial favorite of backpackers, thru-hikers, and bikepackers alike, no list of best. Take some time to figure out your camping style so you can choose one sleeping pad that will last you for. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Open to any ideas. If your chief concern is cost, we recommend the Big Agnes Air Core Ultra. For more details, check out the sleep system section of How to Choose a Sleeping Pad or How to Choose a Sleeping Bag. 97. Additional notes are provided on how to maximize the weight limit of the different sleeping pads in the full reviews, including when a lower PSI is recommended for heavier users. The ProLite Plus is a relatively warm sleeping pad, but no longer near the top of our fleet in terms of R-Value. Your sleeping bag‘s temperature rating is designed to accommodate its max low with a 4. 0 . Most sleeping pads we sell range from 1. Amazon. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. This pad has an R-value of 1. FREE Ultralight Dry Bag For Compression. This is the most common range for general use sleeping mats. That being said, the reality is this pad is completely reasonable considering it accommodates two adults very comfortably and provides a significant amount of warmth. So, let’s start with your winter sleep system. 2-15. 2"*26"*4. For most people, R rating is by far the most important consideration for your air mattress for camping, even more so than its size, amount of foam, or warranty. However, R-value is now a standardized measurement of the insulative property of a sleeping pad. Not best for cold temperatures. Improved SynergyLink ™ Connectors wrap around your sleeping pad to allow freedom of movement without shifting off the pad and losing warmth. Find helpful customer reviews and review ratings for Gear Doctors Ultralight 17oz Camping Sleeping pad ApolloAir - Compact, Warm 5. Qualified orders eligible for FREE S&H and FREE RETURNS. It does have more insulation in the torso and foot areas than the men's version, and has an R-value of 4. This testing standard was created by industry leaders (including Sea to Summit) wanting to achieve two things: Provide clarity and transparency to consumers. Read on to find the ideal, less-than-$100 sleeping pad for you. However, when I got there I found something that created a ton of confusion:Save. The shit that is honestly crazy about this is my roommate was out with her Trekker (R value= 5. Unit price / per . Keep your tent mates happy with fabric that. This new sleep system data suggests that it’s worth looking at a more-insulated pad if you want your bag to live up to its temperature rating. 8 oz: R=2. It weighs 38. Spar suggests thinking big picture. (says 4. 7. Find helpful customer reviews and review ratings for Gear Doctors Ultralight 19oz Camping Sleeping pad ApolloAir - Compact, Warm 5. 1-person. . 0. Head to a blog for an in-depth explanation. From the leading safe sleep brand, HALO, it’s the BassiNest Swivel Sleeper 3. 4. Loaded with features and a minimalist pack size, this pad will cover your needs for nearly anything nature can throw at you. 7" Extra Thick for Most Comfort】Wilsney Wide sleeping pad measures 77. Because the insulation value is being used to determine a temperature rating, it is recommended that the sleeping bag be tested with auxiliary products such as clothing. 1. The following table provides a side-by-side comparison of the ASTM F3340-18 rated sleeping pads available in the US market. Extra long (XL) provides optimal structure and comfort to Draumr 5. Plus, the sleep space becomes extra breathable when paired with the compatible HALO DreamWeave pad,. Best for. Make sure the R rating is an ASTM standard rating. The Nemo Tensor Insulated sleeping pad has an R-Value of 3. They will keep your shoulders and hips off the ground, and keep you warm at night. meant they. Insulation: 80g PRIMALOFT Black Hi-Loft Insulation. 00. If the ratings are determined using the EN 13537 testing standard then, yes, the testing standard uses a manikin wearing "a track suit (i. 5 out of 5 stars 6,008 ratings | 101 answered questions . ECO 3D Deluxe Flexform® Sleep Pad – Parasailing. Regular price. Most Comfortable: Klymit Klymaloft. 1. 5 R-Value all combine to keep you more comfortable on your backcountry adventures! Weight. 8. Standard Test Method for Thermal Resistance of Camping Mattresses Using a Guarded Hot Plate Apparatus F3340-18 ASTM. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. It will also make your sleeping system more versatile. An effective sleeping pad can make you feel too hot if you have excessive bedding. It feels similar to standard slick sleeping bag material, but a little velvetier. I was interested in testing the R-Value of a sleeping pad that I am creating out of balloons (I know, I know…). Red only! It is $51. 3. After researching 34 crib mattresses from 17 brands and analyzing both professional and consumer reviews, we curated our list of the Best Crib Mattresses of 2023. Ultralight sleeping bags & quilts for camping and backpacking. As you can imagine, the thicker a pad is, or the better it insulates you, the higher the pad’s R-value. The pad is insulated and you have a 5. Which R-Value is Right For Me? " This pad has an R-value of 1. 6) pad and a Indian blanket that same 46F night and next door to me in her tent. 5 Inch Thick,. WOLF WALKER Moisture-Proof Foldable Closed Cell Foam Sleeping Pad Lightweight Sleeping Mat for Camping Hiking Backpacking Soft Compact Cushion Outdoor Mattress 4. Customers can use this figure to compare the warmth of various pads with a clear-cut assessment. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Originally posted in r/CampingGear and r/Ultralight, now posting in r/CampingandHiking, r/Camping, and r/lightweight (just for transparency in case you see this more than once. For example, if you search “big agnes 4. REI and retailers are suggesting an R value of 2-3 as acceptable for 3 season use despite the EN standard for sleeping bag ratings specifying an R=4. 7 Best Backpacking Tents Under $100. 6 tested to ASTM F3340; Bestsellers Choosing the right sleeping bag A fitful night’s sleep is no preparation for the big day ahead. Too heavy for most backpackers. 4 sleeping pads for 3-4 seasons, cold weather camping (20° F) Use R-value 5. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. CampSaver. , knit warm-up suit or thermal underwear) where the fabric insulation is 0. It is a camp sleeping pad, hammock sleeping pad that designed to sustain extreme environments. Reviews & Ratings for NEMO Equipment Astro Insulated Lite Sleeping Pad — 14 reviews — Page 1 (14 reviews). Therm-a-Rest rates the NeoAir Topo Luxe with an R-value of 3. Fabric: Closed Cell EVA Foam (2 lb density) Dimensions: Short: 1/8" Thick x 20"x40". CONDITIONS. 2 inches Thick, Single 4. Name: Oblivion - this name comes from the concept that the sleeping pad is so comfortable that you’ll be blissfully unaware of the waking world once you lay down to sleep at night. Sleeping Pad Comparison Table----- A few weeks ago I was in the market for a new sleeping pad. If they think that the ASTM test is unfair to their pads (and it could be), then they should just publish a test result for using a sleeping bag, and be honest about it and argue that the test should be changed to include a "standard" sleeping bag, just like the EN sleeping bag rating test includes a "standard" pad under the sleeping bag. Browse Coleman's top-rated sleeping bags. Dimensions: The mat measures roughly 2 feet long and 7. The test places a sleeping pad between a 95-degree hot plate and a 40-degree plate. 3 Weight: 18. 6 oz, it’s the winter version of the three-season Sea-to-Summit Ether Light XT. 6 pounds, the Insulated Double V is about the same weight as two (kinda heavy) backpacking sleeping pads. Touch device users, explore by touch or with swipe gestures. Clothes are layers, too. Versatility. Though this pad may be one of the warmest of the bunch, comfort isn't just about pad thickness and. 6. Watch. 41 over the lowest price I've seen it. Regular: 72 x 20 x 0. com. NEMO Switchback Sleeping Pad (Photo: Nemo) Toughest Sleeping Pad: NEMO Switchback. It is a perfect camp mat for 3 seasons. Weight. A New Outdoor Industry Standard. Price. Head to a blog for an in-depth explanation. The XLite NXT Max is available in two sizes, a regular (72″ x 25″) and a long (77″ x 25″). Originally Published December 29, 2022. 4 – Insulated AXL Trail Boss. Sleeping pad reservoirs maximize loft and warmth. “Consider your entire sleep system — sleeping bag, sleeping pad, and what could be worn while sleeping — as a modular system. The Sea to Summit Ultralight Air Mat Sleeping Pad is quick to inflate and deflate, folds flat and compactly, and is covered with air cells. The most affected was the NeoAir, bumping up from 3. The sleeping bag and manikin lie on an R 4. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. We have double sleeping mats, self-inflating mattresses for even more comfort and compact and lightweight mats that take up very little space. In the past, the R-value has not had a standardized rating protocol but in January 2020 the ASTM F3340-18 system was introduced. The Graco Hadley 5-in-1 Convertible Crib and Changer with Drawer was designed with safety, innovation, and convenience in mind. 1. 3 Season – R-value 2. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. This typically pushes the length to 77 inches, or even 80 inches in a few cases. 67-$39. Buy Now Best ultralight sleeping pads (1 lb. Type of Pad: Inflatable Air Materials: 30D rip HT Nylon, Polyurethane Thickness: 3 in Weight: 16 oz R-Value: 4. 1. 5 – Insulated Air Core Ultra. Add To Cart. Best Sleeping Pad for Fast-and-Light Backpacking. All while tipping. Many sleeping pad manufacturers send their products to independent testing labs to have their R-values tested, using an industry-standard called ASTM F3340-18 that was rolled out in 2020. The r-value outcome is based on the amount of energy required to keep the hot plate at a steady temperature; a pad that offers a high level of insulation (i. Typically, with new ASTM r-value standards, the r-value is incredibly informative regarding the overall insulation properties of a sleeping pad. This design feature is one of the reasons that Klymit insulated sleeping pads keep you warm in cool temperatures but have a different ASTM R rating than before. Head to a blog for an in-depth explanation. Additional warmth comes from the snuggle factor you can only get on a double pad. Great warmth-to-weight ratio ; Less noisy than previous model ; 4 size. Amazon Basics Ultralight Sleeping Pad for Backpacking Hiking, Folding,Inflatable Portable Air Mattress with Built-in Pump, Mat Olive Green 2. Foam pads that we tested are warmer (and more comfortable), but not as packable. The testing apparatus and methodology is standardized so consumers can compare the R-values of different sleeping pads or brands to one another. 00 - $179. 2 out of 5 stars 114 1 offer from $33. Sleep outside in luxury, without the extra weight or bulk on a Boundary Deluxe Insulated. Depending how warm you sleep you may need a warmer bag. It scored pretty high in every category except for durability. We think the most important factor in a comfortable and warm night’s sleep for backpacking mats is R-value: the amount of insulation a mat provides from the ground. Image: Sea to Summit What R-value sleeping mat should I use in spring/autumn? In mild weather conditions, a sleeping pad with an R-value of 2-4 will suit. Sleeping Pad R-Value Chart by Temperature ASTM sleeping bag ratings are based on a R=4. R-value: ASTM 1. TwinLock™ valve uses 2 one-way valves—one for inflation and one for deflation—making setting up and breaking camp a breeze. Weighing just 3 lbs 7 oz, it’s also one of the lightest sleeping bags you can buy with this temperature rating on the market today. This uninsulated air pad weighs just 1 lb. 00 – $173. Create a universal system to enable users to compare pads across brands. Short: 12 oz. For more on safe sleep practices, click here . Versions: Unisex short, regular, and long; Pad type: Self-inflating Insulation: Open-cell. Head to a blog for an in-depth explanation. Contains recycled materials. 6 °F (-57 °C). Head to a blog for an in-depth explanation. Several factors determine if a garment is sleepwear: Suitability for sleeping, likelihood of garment to be used for sleeping Garment and fabric featuresThe Therm-a-Rest NeoAir XTherm NXT Sleeping Pad is an insulated air mattress designed for cold-weather camping and backpacking. The camping mattress is held under constant compressive force between a guarded hot plate and a cold plate. The right pad can make the difference between a peaceful rest night and be sore and exhausted the following day. An R rating of 4. 5 is a large and in-charge self-inflating sleeping pad, with over 3 inches of cushion between you and the cold ground. We continually innovate sleeping pads, sleeping bags, and other lightweight camping gear to help you rest outdoors comfortably. 2oz). Sleeping pads and camping mats offer cushioning and insulation for sound sleeping. Runner Up Overall: Sea to Summit Ether Light XT Insulated. It is 100% waterproof, making it perfect for any outdoor activities. 【TESTED R-VALUE & LOAD-BEARING CAPACITY】The industry standard ASTM F3340-18 test R-value is 13, so it provides stronger cold resistance capability. 5" (180 x 51 x 6. The Best Camping Mattresses and Sleeping Pads of 2023. 9 sleeping pads for 3 seasons , cool weather camping (32° F) Use R-value 4 – 5. 6 to 2, with the exact value varies by measurement. Since January 1, 2020, we have used the new industry standard ASTM F3340-18 test to provide R-Values for our mats. & under): Therm-a-Rest NeoAir Uberlite, Therm-a-Rest NeoAir XLite NXT, Big Agnes Zoom UL, NEMO Switchback, NEMO Tensor Insulated, Therm-a-Rest NeoAir XTherm NXT. The new R-value standard for sleeping pads, ASTM FF3340, defines a rigorous and reliable methodology for measuring the R-value of all sleeping pads, including air mattresses, self-inflating pads, and foam pads. Recently, we have received some emails claiming that there are issues with the sleeping mats they purchased from other low-price sellers. This ultralight and packable sleep mat is designed to reduce heat loss through radiation and convection, giving it an unbeatable warmth-to-weight ratio perfect for lightweight adventures in challenging environments. The body-mapped shape and V chamber design combine to maintain comfort and minimize air movement that can impact insulation. Body Mapping Technology: Our patented V-shaped design delivers support and comfort no matter how you sleep ; on your side, stomach or back. As compact, light as possible. The refined shape boosts efficiency even more, shaving up to 2 oz (57 g) off the previous version, while our down-lined Toe-asis™ foot pocket keeps your feet unquestionably warm. 1 oz. 1 lb. Regular: 14. Gender. Warmth (R-value): A pad’s ability to resist heat loss to the ground is measured as R-value—higher R-values are. Keep your tentmates happy with fabric that makes minimum noise when. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad.