The Therm-a-Rest ProLite Mattress is a sleeping mattress that won't weigh down your hiking pack. The Atmos™ foam pad comes in four sizes, ranging from 36 inches to a whopping 77 inches (in length). The fabric on the outside is a strong 50D mini hex rip polyester, built to take on the rigors of backpacking yet soft enough to the touch. The mattress inflates itself once you lay it out and open the air valve, creating a 2.4 R-value and a 1 inch thickness that keeps your body off the cold ground. Just add a few breaths of air to the pad for firmness before snuggling into your tent. When you wake in the morning, release the air, fold and roll 'er up and jam it right into the included stuff sack. Easy peasy, right into your pack!
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