"An upgrade on best-selling original Nemo Tensor, the Nemo Tensor All-Season Sleeping Pad offers campers and backpackers lightweight, 4-season comfort. Made with Nemo's proven Spaceframe baffle construction, this pad integrates low-stretch fabric trusses to create stable support and just the right amount of give. Pairing a durable 20-denier nylon top and 40-denier nylon bottom on the outside, this pad also features 2 layers of metallized Thermal Mirror film suspended inside each baffle to reflect body heat for greater warmth and comfort without adding any weight. This reflective technology works with the pad's 3.5"" of stable, cushioned loft to give the All-Season an R-value of 4.5 for incredibly comfortable nights. Comes with a fast-inflating Vortex pump sack which works with the pad's zero-profile, multifunctional, microadjustable Laylow valve. Mfrs. limited lifetime warranty. Update on Nemo's proven original Tensor sleeping pad Durable shell - 20-denier nylon top and 40-denier nylon bottom R-value of 4.5 Proven Spaceframe baffle construction inside 2 layers of metallized Thermal Mirror film suspended inside each baffle 3.5"" of stable, cushioned loft Fast-inflating Vortex pump sackSpecs:Regular: 72""L x 20""W x 3.5""H Weight: 1 lb. 2.oz. Max Wt. Cap.: 300 lbs.Regular Wide 72""L x 25""W x 3.5""H Weight: 1 lb. 5.oz. Max Wt. Cap.: 300 lbs.Long Wide 76""L x 25""W x 3.5""H Weight: 1 lb. 7 oz. Max Wt. Cap.: 300 lbs."