Sleeping Mat R Value 4

If your sleeping pad is substantially less than r 4 8 you ll lose more heat to the ground and you might not be warm enough in an en 40 f 4 c sleeping bag on a 45 f 7 c night.

Sleeping mat r value 4. For example a mat with an r value of 4 or 5 on top of a lightweight closed cell foam mat with a 1 2 r value will give you the insulation you need without the bulk and weight. Putting a number on warmth when buying a sleeping mat most people shop around a bit and compare the different brands and models available. R values of 4 6 are good when the temperature drops around or below freezing. Pads with higher r values do this more effectively than pads with lower r values.

The higher the r value the more thermally resistant the material or structure is. It is now the standard value for comparing warmth across pads. This isn t just used to measure sleeping pads. With a new and greatly improved valve system we didn t have any hesitation giving the xtherm our editors choice award once again.

Higher numbers mean more insulation. A pad with an r value of 2 0 is twice as warm as pad with an r value of 1 0. Our listed r value is tested and retested and our final numbers are listed in accordance with the astm standard protocol. Check out the table below to get an idea of what r value we.

A sleeping pad r value measures a sleeping pad s ability to prevent heat loss to the ground when you lie on it at night. The therm a rest neoair xtherm is an absolute beast that balances remarkable warmth 6 9 r value with a packable and lightweight design. However r value is now a standardized measurement of the insulative property of a sleeping pad. Important points such as price quality comfort ease of use reliability compressibility and warmth all enter into the equation.

Buy the pad that suits you. With all the other parameters it s pretty straightforward to. Sleeping is a personal experience and only you truly know what level of comfort you need to sleep soundly. R value and how we test it.

A pad with a 5 r value or you can add a foam pad under your air pad is great for cold sleepers or sleeping on snow. To calculate the total insulation for stacked sleeping pads simply add their r values. The scale is straightforward. The en iso testing protocol requires a zipped up sleeping bag with the hood cinched along with several other requirements including using an r 4 8 sleeping pad.

R values of 2 4 are good for most 3 season backpacking conditions. In general sleeping pads with r values of 0 2 will only work for warm weather trips. So you may need to stack a few mats together to reach a suitable r value for alpine use. But it s that last one warmth that s a bit sticky.

An important thing to remember is r value is not an independently verified value. Key facts about r values in sleeping pads. Engineers and scientists also use r value to measure everything from windows to fiberglass. No other pad on the market offer this amount of warmth and comfort while maintaining versatile features.

Think about the terrain that you re going to be sleeping on. Technically r value is a measure of thermal resistance. Your sleep system your sleeping pad and bag work together.