Description The Rab Andes Windstopper 800 Sleeping Bag is designed for high-altitude expeditions and extreme cold where warmth, wind protection, and packability matter most. High-loft 800FP goose down works with a heat-reflective TILT lining to retain warmth without adding unnecessary bulk, while the WINDSTOPPERA(R) by GORE-TEX LABS outer blocks biting windchill. Trapezoid boxwall baffles, a 3D neck collar, insulated zip baffle, and shaped foot box help minimize heat loss and maintain loft through long nights in severe conditions. Specs Weight 48.5 oz Insulation 800FP European goose down with Grangers fluorocarbon-free hydrophobic finish Main Fabric 13D WINDSTOPPERA(R) Products by GORE-TEX LABS with fluorocarbon-free DWR Fabric Lining 20D nylon ripstop with TILT technology (35gsm) Sleep Limit -10AdegF Limit of Comfort -9AdegF Packed Size 10.2" x 17.7" Manufacturer Warranty Limited lifetime