Therm-A-Rest Trail Lite Mattress With both outstanding comfort and a sturdy construction, the Therm-A-Rest Trail Lite Mattress will give you a great night s rest, even on the toughest terrain. This thick trail pad gives you maximum performance, lifting you off the ground, and away from the cold. The strong polyester material and ergonomic design assure a comfortable fit even on bumpy surfaces. Lightweight material makes this mattress a cinch to carry on the trail. You ll barely notice you have it, until you need it. A convenient packing sack makes storage easy and fast. Best of all, the Therm-A-Rest Trail Lite Mattress is built to last, trek after trek.