Take one more example, the well-known Therm-a-Rest BaseCamp Self-Inflating Sleeping Pad. They do not provide numbers about the insulation weight alone for two cases, so it is far from clear what causes such R-value differences. The weight difference in the two bags is significant. However, the big difference in this case is not necessarily due to the new rating scale. The new pad has ASTM F3340-18 Standard R-value 7. But now on their site they have two versions of this pad. The old R-value was 11.4 and this is still available on Amazon. But on Nemo’s site it is now with R-value 6.Īn interesting situation is with the Therm-a-Rest MondoKing 3D sleeping pad. It is on Amazon with the temperature rating -30 F (-34 C). I checked for their NEMO Roamer Self-Inflating Sleeping Pad. Earlier, they were with temperature rating, but on their site they now use both R-value and the temperature rating. Something similar is happening with Nemo’s sleeping pads. My earlier estimate was that this corresponded to the R-value 6-7, so I was not particularly correct. Just to know this pad was previously with the temperature rating -5 F. But on their site it is given with the new rating, see how it looks: Big Agnes Hinman Sleeping Pad – new R-value rating. I checked their Big Agnes Hinman Sleeping Pad on Amazon and it is with temperature rating. So you cannot make an exact comparison.īut the good news is that this same brand (Big Agnes) is now using R-value instead of their previous temperature rating. See some details here:Īs you know, some brands have never used R-values for their pads. They all claim that they have already used the same method before in determining the previous R-values, but it appears that there are differences in the old and new numbers. There is some prescribed pressure in the sleeping pad, the hot pad is set to 95 F (35 C) to mimic the body and its temperature, and a few more details, you will see more in the video below. They use hot and cold plates on the two sides of the pad and then measure the energy needed to keep the hot one at a constant temperature. Hopefully, more and more brands will introduce this new standard. Some will use their own metrics, so this is just to know what you can expect. These brands include Therm-a-Rest, Sea-to-Summit, Exped, Big Agnes, and probably a few more. But a number of industry leaders will use this new ASTM rating and it will be easier to compare pads. So, is this new ASTM F3340-18 Standard R-Value a compulsory industry standard In this case the pad insulates you and allows you to stay cooler. But it is true also that the ground can be warmer than the air. This is why sleeping off the ground, on a camping cot, can be a good idea.
This depends on various factors and it can be up to 50 times or so more. The body heat is lost far more to the cold ground than to the air. In general, the higher the R-value, the more thermally resistant the pad is. So this is a metric used to describe the efficiency of your sleeping pad to prevent heat loss to the ground.
The letter R is used for the word ‘resistance’. So, get ready to find and buy all your desirable products from your best-loved brands on Ubuy.From 2020 onwards a new ASTM F3340-18 standard for camping sleeping pads ratings, known as R-value, will be used by some leading brands in the sleeping pads industry. Searching for your preferred products and brands across towns and cities may not be necessary for this modern technological era since your products are just one click away. You can discover the latest offers on Exped products and save money each time you decide to purchase. To find a perfect collection of unique and popular global products from Exped, Ubuy online shopping can help you to get the right product that suits your specific requirements. It is also the right place to find products that are not easily available elsewhere. If you are looking for exclusive Exped products online in Johannesburg, Cape Town, Durban, Pretoria, Port Elizabeth, etc you can find it effortlessly on Ubuy which is a one-stop-shop to explore from over 100 million products and brands from international market. A good online store is a quintessential stop to discover a galaxy of brands and products to suit every requirement. Hence, it is very essential and beneficial to find a genuine, reliable and trustworthy online store to buy Exped products. Most people would love to find all their essential products in one location, whenever they choose to buy anything. If you are looking for all the best international brands and genuine quality global products, your search ends here.
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