"The warmest ultralight pad in the Nemo line, the Nemo Tensor Extreme Conditions Ultralight Insulated Mummy Sleeping Pad offers campers and backpackers lightweight, 4-season comfort. Made with Apex baffle internal structure, the Tensor Extreme Conditions mummy sleeping pad offers an astounding 8.5 R-value and warmth-to-weight ratio in a quiet pad design. This unique construction combines distinctly shaped baffles with 4 layers of insulating Thermal Mirror film inside to produce incredible warmth to deliver incredible warmth and comfort from a quiet pad that weighs just over a pound. Pairing a durable, bluesign-approved 20-denier nylon top and 40-denier nylon bottom on the outside, this pad delivers 3.5"" of stable, cushioned loft for incredibly comfortable nights underneath your mummy sleeping bag. Comes with a fast-inflating Vortex pump sack which works with the pad's zero-profile, multifunctional, micro-adjustable Laylow valve to inflate the pad in just minutes. Pad comes with hook-and-loop strap, stuff sack, repair patches, and Vortex pump sack. 72""L x 20""W (shoulders) x 3.5""H. Weight: 1 lb. 1 oz. Mfrs. limited lifetime warranty. Lightweight sleeping pad with maximized warmth and comfort Lightweight, 4-season comfort R-value of 8.5 Apex baffle internal structure 4 layers of insulating Thermal Mirror film for incredible warmth Durable shell - bluesign-approved 20-denier nylon top and 40-denier nylon bottom 3.5"" of stable, cushioned loft Multifunctional, micro-adjustable Laylow valve Fast-inflating Vortex pump sack"