The ALPS Mountaineering Nimble Insulated - Double air pad features a 3D body-mapped design to help keep you from sliding or rolling off no matter what sleeping position you prefer. The TechLoft Silver insulation provides an R-value of 3.9 and is treated with antimicrobials to prevent bacteria growth. The included stuff sack features a one-way valve that securely attaches to the Nimble Double's flat valve, doubling as a pump sack for quick inflation. As with all ALPS air pads, the Nimble series comes with a stuff sack and repair kit.