Closed cell foam provides a firm, insulated barrier between you and the ground. Plus, a comfortable backcountry seat on uneven ground and protection from snow or wet grass. 20 x 12 Hiking Seat: 3 x 12 / 7 x 30 cm. 20 x 72 Regular Pad: 6 x 20 / 15 x 51cm. Die cut sections on top layer trap warm air and tire tread pattern on bottom layer creates more cushion. Two foam layers combine for more warmth and comfort. Use beneath air chamber pads for additional warmth or with any pad when sleeping on frozen ground and snow. Regular and short sleeping pad sizes to cover all situations and the foam can be easily cut to the exact size you need. Makes a great bleacher seat for spectator events. Closed cell foam provides a firm, insulated barrier between. Die cut sections on top layer trap warm air and tire tread. Two foam layers combine for more warmth and comfort.