The Big Agnes insulated Air Core Pad is a Backpacker Magazine Editor's Choice Award Winner. Designed for those that covet ultra light, compact gear they are not self inflating, but in a few breaths you will enjoy out of this world comfort. 3.25 thick, 3.5 season Air Core pad filled with PrimaLoft eco synthetic insulation for a 15 deg. temperature rating and an R Value of 4.1. PrimaLoft Eco insulation is a synthetic insulation made from 70% recycled materials. 34 length 2.5 is lightweight at 15 oz. and packs to a small, compact 5 x 7.5, about the size of a Nalgene bottle. If used in a Big Agnes sleeping bag, the pad can be deflated, left in the pad sleeve and stuffed in the sleeping bag stuff sack. The rectangular shape is 20 wide x 48 long x 3.25 thick. Unique construction technique prevents the insulation from shifting inside the air chambers. The I beam construction technique is functionally superior to the typical welded through construction of other air mats. Die cut holes in each I beam allow air to flow freely between chambers giving constant support and comfort. I beam construction makes inflation quick and easy. Durable, lightweight 50 denier diamond nylon ripstop top and bottom. Prima Loft features a silicone treatment which serves as an anti microbial within the pad. Internal polyurethane PU coating makes pad waterproof. Lightweight, durable plastic valve. Insulated Air Core Pads come with a stuff sack and repair kit. Color: BlackBlue Import.