astm rating sleeping pad. Your body will continue to lose heat to the ground, until the ground beneath you reaches thew same temperature, or “thermal equilibrium”. astm rating sleeping pad

 
 Your body will continue to lose heat to the ground, until the ground beneath you reaches thew same temperature, or “thermal equilibrium”astm rating sleeping pad 9 up to a whopping 5

For $20 more you can get the Big Agnes Air Core Insulated with an R value of over 4. The Ether Light XT Air Sleeping Mat is perfect for warm-weather backpackers looking for a quiet, lightweight sleeping pad that offers a. Second, we have found that pads with R-values between 2. 0 rating, you’ll have a total R-value of 6. Soft and warm Merino wool sleep sack or sleeping bag liner for hotels, youth hostels, alpine huts, boats, planes and trains. We tested backpacking sleeping bags from Western Mountaineering, Nemo, Big Agnes, and more to find the coziest, most lightweight, and most packable models. Head to a blog for an in-depth explanation. The shit that is honestly crazy about this is my roommate was out with her Trekker (R value= 5. In this way, Greg and Brandon remarked, the r-value standard is “extremely pure. 5 (rated for 4-seasons) Thickness: 3” Weight: 12. This is more like a 40 degree bag rating. 4. It is a camp sleeping pad, hammock sleeping pad that designed to sustain extreme environments. Dimensions. . 2 out of 5 stars 114 1 offer from $33. 24 Find helpful customer reviews and review ratings for Gear Doctors Self Inflating Camping Sleeping Pad for Camping 4. Head to a blog for an in-depth explanation. 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. Backed by our LIFETIME GUARANTEE. This protocol dictates how mats should be. With a sleeping pad that means the higher the R-value, the less heat from your body gets sucked through the pad to the cold ground. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 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. ) 3 inches. Soft, stretch-knit surface feels great next to skin. 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. Sleeping Pad Type Size Weight ASTM 3340 R-Value; Therm-a-Rest NeoAir UberLite: Air Pad: 20" x 72" x 2. We have double sleeping mats, self-inflating mattresses for even more comfort and compact and lightweight mats that take up very little space. Too heavy for most backpackers. It's an excellent option for side sleepers due to its double layer of Air Sprung Cells in the torso area that supports hips and shoulders. For thru-hikers, a good sleeping pad is essential for comfort and proper posture. 5 Pros. The structure of the insulate is also designed to be paired with a sleeping bag rather than a quilt. They've also used a thicker 70D material for the underside of the pad. 5 What we like: Great warmth-to-weight ratio for 3-season backpacking; new, quieter design. 6 cm) of bump-swallowing loft provides a plush sleeping surface. The chart will suggest the sleeping pad you need based on its minimal R-value for each temperature range. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. R-value 6. ASTM FF3340 Test of R=2. Lightweight. Outside of outdoor sleeping pads, flexible polyurethane foams are widely used in such applications as furniture, automobiles, packaging and bedding. 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. We also provide our lightweight sleeping pads in several designs and colors. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 00 (20% off) Size: Medium. But how is density measured? Read on to learn. Intended use: Decide which activity your pad is for: backpacking, car camping, winter camping, etc. Sku # : 2000036400. $159. This testing standard was created by industry leaders (including Sea to Summit) wanting to achieve two things: Provide clarity and transparency to consumers. Yes. The ASTM R value of this pad is 1. Several years ago manufacturers collectively agreed to a standard measurement for R-value, called the ASTM F3340-18, and began using it for sleeping pads sold in 2020. INSULATED FOAM: R-Value 10+ foam helps keep body warm. Regular price. —William M. Made. 236 Reviews. Make sure the R rating is an ASTM standard rating. Most sleeping pads we sell range from 1. 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. Does ASTM F2413-18 mean steel. Pad Thickness (in. After over a year of testing, I can now confidently say that this is a 2 season (3 at push) sleeping air mattress. Gear Doctors ApolloAir Ultralight Inflatable Camping pad. 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. Read honest and unbiased product reviews from our users. The pad weights listed are sized for 72″ long x 20″ wide pads, though there are a few exceptions below. The closed cell foam will also show marks easily, so a variety of markings & variation in coloration should be expected even on new items. The shell is 30D stretch polyester on the top and 75D polyester on the bottom. Most women sleep colder than most men, so female campers should consider opting for a pad with a higher R-value. Klymit pads are pretty cheap in comparison to other backpacking brands like Exped, Thermrest, etc. NEMO Switchback Sleeping Pad (Photo: Nemo) Toughest Sleeping Pad: NEMO Switchback. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Best for Cold Weather: Therm-a-Rest NeoAir XTherm NXT. Originally Published October 23, 2018. Head to a blog for an in-depth explanation. 00 Save $26. 6 pounds, the Insulated Double V is about the same weight as two (kinda heavy) backpacking sleeping pads. Which R-Value is Right For Me? " This pad has an R-value of 1. R-Value : 4. CampSaver. 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. $99. Best overall: REI Co-Op Trailmade Self-Inflating Sleeping Pad. 0 (with the R5. The Trail Lite is still one of the warmest pads in this review and could be used in spring. 5in Thick Camping Sleep Pad, No Air Pump Required, Compression Straps Included for Easy Deflation :. If you skimp on your pad's warmth, you should use a warmer sleeping bag and vice versa. & 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 Zenbivy is made of a removable quilt/bag, left, and pad sleeve/hood. 8 20D Nylon Material: 20D Nylon TPU Thickness: 7cm Inflatable Bag Size: 52. ASTM International passed a new R-Value Sleeping Pad Standard last month that will be rolled out to consumers in 2020. Everything we make is fully. Long Wide (LW) provides optimal structure and comfort to Draumr 5. Learn about types of pads, insulation, R-value and other features. R-value, as used in technical terms, is a measurement of thermal resistance; the greater the R-value, the more thermally resistant the material or structure is. 15 sold in last 18 hours. Sale Coming Soon. Read honest and unbiased product reviews from our users. Since January 2020 we have used the industry standard ASTM F3340-18 test to provide R-Values for our mats. I found the options quite. Most sleeping pads we sell range from 1. Ultralight sleeping bags & quilts for camping and backpacking. Just buy another sleeping pad of r-value 5 add pair it with the r-value 3. 1. Head to a blog for an in-depth explanation. Side Rails: Integrated into the patterning and construction, they provide a secure, comfortable sleep by centering you on the pad and inhibiting air movement while tossing and turning. Thermarest NeoAir Xtherm – The Best Sleeping Pad of 202 3. If you prefer a rectangular-shaped sleeping pad, there is one called the NeoAir XLite NXT Max, which has the same R-value (4. Quantity: 1. 2 R-Value 4 Season Air Mattress, Perfect for Backpacking, Hiking - Lightweight Inflatable & Compact Sleep Pad (Large) at Amazon. 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. As a general guide Therm-a-rest recommend the following: Summer: R1 to R2. 5 Inch Thick,. 3 – Insulated Q-Core Deluxe. 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. Read honest and unbiased product reviews from our users. 59The REI Camp Bed 3. 3 – Insulated AXL Air. a new standard was. 0, which is on the low end of being suitable for. 1. com : Coleman Self-Inflating Sleeping Pad with Pillow, 2. Therm-a-Rest has upgraded its valve system to a more efficient one-way valve, but its R-value got knocked down. 049 m2. Additionally, ASTM F3340-18 is the new testing standard that provides an R-Value for like-like comparisons. Short: 10. EASY INFLATION: Intuitive valve design allows pad to inflate in seconds. 2 R-value without the usually associated weight. Recently, we have received some emails claiming that there are issues with the sleeping mats they purchased from other low-price sellers. The MegaMat remains a great choice and is pretty well. 5" (180 x 51 x 6. , knit warm-up suit or thermal underwear) where the fabric insulation is 0. 3 Weight: 18. Halo offers several BassiNest product lines, all of which include the 360° swivel and rotation as well as its patented lowering bedside wall. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. There are other factors which will determine how well a sleeping mat will insulate; but the standardized ASTM R-Value test means that you can compare resistance to heat loss in sleeping pads across different brands. Unisex. 7" after inflation, compared to other cheap thin sleeping mats, this 4. Winterlight. 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. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 4 out of 5 stars. 5 (ASTM F3340 Standard). Here are a few more tips from our product gurus, Spar and Pat, to help you maximize your sleep system all year long. 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. Sale price $149. A sleeping pad with a higher R-value is always a better insulator. 5,793 global ratings. I love it! I've been looking at building a sleep system for my job. Body Mapping Technology: Our patented V-shaped design delivers support and comfort no matter how you sleep ; on your side, stomach or back. 5 x 8 inches, and has an ASTM R-value of 2. The sleeping bag and manikin lie on an R 4. MSRP: $15. Philip Werner March 3, 2023 Sleeping Pad Reviews. Ultralight and ultra-packable, the Therm-a-Rest NeoAir XLite NXT sleeping pad is quieter, thicker and designed with less bulk than its predecessor while maintaining year-round warmth and versatility. Therm-a-Rest rates the NeoAir Topo Luxe with an R-value of 3. Long Wide: 1 lb. The designated R-Value is a good way to begin a process of elimination when choosing the best sleeping pad, however we know there are a few more factors that go into your final. it wouldn't let me use the crosspost feature) . 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. The test places a sleeping pad between a 95-degree hot plate and a 40-degree plate. It uses a dual layer of synthetic fibers to boost its R-value to 4. The Paria ReCharge XL is also a great pad for under $100 though they do not ASTM rate their pads. So this is a sleeping pad for all seasons. Sleeping Pad R-Value Chart by Temperature ASTM sleeping bag ratings are based on a R=4. 5cm when unrolled, and packs down to a standard-if somewhat chunky 31 x 21cm roll - with some help from a pair of. Sleeping pads and camping mats offer cushioning and insulation for sound sleeping. R-Value 2-3. But recently, I tested the pad in the mid-twenties on snow over frozen ground with a down sleeping bag, and was toasty. 1 to 2. 0 generally work well for three-season use but should be supplemented with a foam pad for use in the winter, where an R-value of around 5 or above is ideal. So for instance, a sleeping pad with an R-value of 2 is half as insulated as one with a rating of 4. How to Choose Sleeping Pads. Depending how warm you sleep you may need a warmer bag. 7 Best Backpacking Tents Under $100. 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. 5cm Gift: Inflatable Bag Color: Silver/Black R5. Best Overall: Therm-a-Rest NeoAir Xlite NXT. $27. 97. 95 – to $199. TwinLock™ valve uses 2 one-way valves—one for inflation and one for deflation—making setting up and breaking camp a breeze. . 8. Shop for Air Pads at REI - FREE SHIPPING With $50 minimum purchase. 6. Thickest pad in the Static Series line at 3. Read on to find the ideal, less-than-$100 sleeping pad for you. 3 out of 5 stars 1,750. Raised V-Chambers create comfortable loft pockets that support the body's pressure points. 67-$39. As you can imagine, the thicker a pad is, or the better it insulates you, the higher the pad’s R-value. 5 R-Value all combine to keep you more comfortable on your backcountry adventures! Weight. In the last year, the outdoor industry in the US has adopted a standardized way to test the R-values of sleeping pads, called the ASTM (American Society for Testing and Materials) Standard. 30°F or lower. Head to a blog for an in-depth explanation. “For winter backpacking and camping, an R-value of 5, or higher, is recommended. 5 in Must Haves Inflatable Foam air Sleep mat Self Inflating air Mattress for Camping cot pad Tent Floors at Amazon. Shop Now. 5 – Insulated Air Core Ultra. 3 Weight 250g. 4. You can count on the durable, weather-resistant polyester shell to hold up night after night and the. Weight and Packed Size. Coleman. . 0 . But now, the new Zenbivy Bed 2. Take some time to figure out your camping style so you can choose one sleeping pad that will last you for. Features. Cons. 0 4. We bring you nine of the comfiest self-inflating sleeping pads of the year, plus one hybrid sleep system and a portable cot. Fake!! Product Description: Brand: Light Tour Name: Light Tour Sleeping Pad High R3. Product Update — April 2023. I tried contacting Klymit for this information but never received a response. We stock a great selection of camping and sleeping mats from top brands such as Quechua and Forclaz, and more. Shop for Sleeping Pads R-Value 4 to 5. Versatility. How you choose to combine base. Today. . Regular Wide: 72 x 25 x 3 inches. I can write more on this if you’re interested. 4, while many foam-insulated, self-inflating pads took a hit in the negative. 4; this doesn't mean that anything has changed with this pad's. . Runner Up Overall: Sea to Summit Ether Light XT Insulated. The Halo BassiNest products are bedside sleeper bassinets that swivel 360 degrees all while being small and compact enough to make room-sharing easy. Therm-a-Rest NeoAir XLite NXT ($210) Category: Air pad Weight: 12. 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. Sleeping pad reservoirs maximize loft and warmth. I sent an email to the company Inquiring about their R-value as it is not an ASTM rating. ) 3 inches. 0 R-Value and protection from punctures when you layer the Z Lite SOL under another sleeping pad. As mentioned, R-value is a measure of a material or structure’s thermal resistance to heat loss. 8 (RSI 0. 5. Day one, night one. This revised sleeping pad is 1. 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. Klymaloft Sleeping Pad Review. Gender. (181) 181 reviews with an average rating of 4. TravelSheet. Like all Western Mountaineering sleeping bags, the Puma is filled with 850+ fill power goose down which has a very high warmth to weight ratio. 6) pad and a Indian blanket that same 46F night and next door to me in her tent. 20°F or lower. The ASTM Standard. 5 star: 69%: 4 star: 18%: 3 star:. $39. 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. It includes thermal insulation, to keep your body warm from the cold winter ground. Watch. 3 R Insulated Camping mats-1. 41 before tax. First note down the r-value you want (e. A quality sleeping pad can add so much value to your camping experience and give you a rest that is just as good as your bed at home. 99. A good sleeping pad will make. And for that we thank Exped. 00, which is high for a bag rated for that temperature. Updated ASTM ratings set the pad back a bitJul 5, 2023 - 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. Best for Couples: Exped Ultra 3R Duo. 4K+ bought in past month. Nemo Tensor Insulated Sleeping Pad. Head to a blog for an in-depth explanation. Using a standardized test gives the buyer (that's you!) more confidence when comparing R-values between sleeping pads. Head to a blog for an in-depth explanation. This will activate the sensors, calibrate the mat, and allow you to pair the device with your phone. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. There’s a lot more to understand when it comes to the role. Montbell’s Seamless Down Hugger Sleeping Bag uses spiraled elastic stitching to conform to the sleeper’s body. These systems provide a standard way of rating sleeping bags regardless of their brand. 5. 8 before it can be used in their test?The uninsulated pad has an r-value of 1. Innovative, packable, and reliable sleeping pads for camping. Our sleeping pads utilize body mapping technology to provide support where you need it while you sleep. NOTE: Weights may vary up or down . Great warmth-to-weight ratio ; Less noisy than previous model ; 4 size. 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. Best for Cold Sleepers: Therm-a-Rest NeoAir Xtherm. Find helpful customer reviews and review ratings for Gear Doctors Ultralight 19oz Camping Sleeping pad ApolloAir - Compact, Warm 5. Here’s the bottom line: it’s made with a layer of down insulation that boosts the R-value to an absurd 7. The reason people try to reduce the R-value is to reduce packing weight, bulk, and cost. 8 Women’s Warmzone Mat: first impressions. Therm-a-Rest is synonymous with quality. 9 to sleep in 20F. 9 inches. Trailspace's community of gear reviewers has field-tested and rated the top self-inflating sleeping pads. Customers can use this figure to compare the warmth of various pads with a clear-cut assessment. 99. 2, while the men's regular ProLite Plus only has an R-value of 3. Insulated Mummy Regular: 16 oz. The Kelty Cosmic SI Mummy Sleeping Mat is an unusually generous 198 x 60 x 2. 9 in (15 cm) of comfortable foam. ". I found the options quite. Long X-Wide: 2 lbs. Available in White, Espresso, and Pebble Gray baby-safe, non-toxic finishes, the Hadley features a spacious drawer for easy storage of nursery essentials, and converts from crib to toddler bed, day bed, and full-size bed to. You’ll find our tents, our hammocks. 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. 1 with just 4 oz of insulation (11. ProLite™ Plus Women's Sleeping Pad. There was a minor kerfuffle when new ASTM R ratings came out. 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. 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. 8 oz. 1. 1. 00. Add To Cart. Thermarest Prolite Apex – Lightest Self Inflating Sleeping Pad. Weight : Regular 550g - Long Wide 810g. If you are good at taking care of your gear, this is an excellent pad for the price. Unfortunately, it is not as highly insulated as described (ASTM rating of only 1. There's no way you need a R value of 6. Head to a blog for an in-depth explanation. However, when I got there I found something that created a ton of confusion:Save. Membership Pricing: $0. Head to a blog for an in-depth explanation. 8 before it can be used in their test?The Big Agnes Q-Core SLX is an excellent balance of warmth, weight, comfort, and durability. The following table provides a side-by-side comparison of the ASTM F3340-18 rated sleeping pads available in the US market. (7. Over the 13 years, our backpacking experts have tested close to 100 of the best backpacking sleeping. Best splurge: Therm-a-Rest NeoAir Xlite NXT Sleeping Pad. Sleeping Pad FAQ. Each number has a decimal point, and the ratings can sometimes be quite specific, meaning a 4. Short: 51 x 20 x 0. Hi-Tech Memory Foam Sleeping Pad: Elegear self inflating sleeping pad features Hi-Tech memory foam with a density of 26D while other camping pads only have a density of 19D. 8 oz: R=2. ILD, or indentation load deflection, measures a foam's firmness. It feels similar to standard slick sleeping bag material, but a little velvetier. Klymit Gear FAQ. 6 °F (-57 °C). g. 5/R5. The Exped SynMat HL M is a functional sleeping pad that lags behind the leaders in ultralight insulated backpacking sleeping pads. It’s the lighter materials used for backpacking that really raises the price. Best Overall Backpacking Sleeping Pad 1. It also comes with a patch for a quick hole fix. Find helpful customer reviews and review ratings for Klymit Static V Ultralite SL Sleeping Pad at Amazon. That’s what intentional gear selection is all about. We continually innovate sleeping pads, sleeping bags, and other lightweight camping gear to help you rest outdoors comfortably. It defines a rigorous and reliable methodology for measuring the R-Value of all sleeping pads, including air. 97. Head to a blog for an in-depth explanation. Top Rated. From 2020 a New ASTM F3340-18 Standard for Camping Sleeping Pads Ratings, Known as R-Value, Will be Used by Some Leading Brands. Color: Gray. ”. 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. The Best Self-Inflating Sleeping Pads. It provides maximum comfort. The quilt-like baffle design prevents edge collapse found on horizontal pads and the bouncy sensation caused by vertically baffled mattresses. Regular: 13 oz. The ProLite Plus is a relatively warm sleeping pad, but no longer near the top of our fleet in terms of R-Value. Add To Cart. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Weighing just 16 oz, the XTherm NXT is also lightweight, rolls up small, and is made with thick and durable materials, including a 30d top fabric and a 70d bottom fabric. For more details, check out the sleep system section of How to Choose a Sleeping Pad or How to Choose a Sleeping Bag. It weighs less than a pound, and the profile is 0. Subscribe to our newsletter for gear news, expert tips and adventure ideas. FREE Ultralight Dry Bag For Compression. This was one of our favorite pads to sleep on and gave us many good nights of sleep. The estimated R-value is around 1. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. Updated. Contains recycled materials. It cost me a thru hike last year. 6 Does Not Support NEMO's Claim 15°-25°F Pad. $159. Delivery & Returns Enquiry. ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. 00. The 6 Best Backpacking Sleeping Pads of 2023. Lower limit rating (which is always lower than. Buy Now Best ultralight sleeping pads (1 lb. Tensor™ now features 100% bluesign® certified, recycled 20D polyester fabrics. But alongside other self-inflating mats, it’s pretty competitive, and at a push it will still fit nicely in the bottom of a trekking pack. Better than my real bed. Ionosphere 5 Sleep Mat (550g) £170. WOLF WALKER Moisture-Proof Foldable Closed Cell Foam Sleeping Pad Lightweight Sleeping Mat for Camping Hiking Backpacking Soft Compact Cushion Outdoor Mattress 4. 0 feels like it lives up to those temperature ratings. Whether you're looking for a sleeping pad for backpacking or an all around sleeping pad for camping, we offer our sleeping pads in a variety of sizes and styles to help you get the best night of sleep while your camping. R-value: 4. 00 $19. Keep your tentmates happy with fabric that makes minimum noise when. 2 – Q-Core SLX & SLX Tent Floor Pad. 7. R-Value: 4. 5" Warmth Series PVC-Free Self Inflating Sleep Pad. 6 oz, it’s the winter version of the three-season Sea-to-Summit Ether Light XT. Head to a blog for an in-depth explanation. 8. Clothes are layers, too.