218121RBKREG Features: Lasts for camping trip after camping trip with durable, lightweight 50-denier diamond nylon ripstop fabric on the top and bottom Protect the inside of your pad from outside moisture thanks to the internal polyurethane coating Eliminate uncomfortable cold spots and ensure stability with the I-beam construction that removes the need for welded seams Fill it with air through the the non-breakable EZ-Flate plastic-coated brass valve Mummy design for an ideal fit with your mummy sleeping bag Specifications: Weight: 1 lb 3 oz (Regular); 1 lb 6 oz (Long) Dimensions: 72 x 20 inches (Regular); 78 x 20 inches (Long) Insulation: air R value: 1 Stuff size: 8 x 4 inches (Regular); 8 x 45 inches (Long)