The Exped Sim 3.8 Sleeping Pad is a self-inflating sleeping pad for backpacking. Capable of keeping you off the ground and warm down to temps of 12.2°F, the R-Value of 4.00 is a solid choice for your bed away from home. All you have to do is lay out the mat and open the valve, then go about setting up the rest of your camp, perhaps starting on dinner. When you return to your tent, add a few breaths of air through the valve and voila! Ready for bedtime.
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