Description The Rab Mythic Ultra Down Sleeping Bag 10AdegF is designed for fast-moving cold-weather trips where every ounce and inch of pack space matters. High-loft 900FP down works with Rab&';s L.O.F.T 3D(TM) helix-shaped baffle construction to keep insulation evenly distributed and reduce heat loss, while a heat-reflective TILT lining further improves warmth without meaningful added weight. A lightweight PertexA(R) Quantum ripstop shell, tapered mummy shape, insulated half-length zip, and anatomically shaped foot box help balance durability, packability, and warmth for alpine objectives, fastpacking, and other demanding mountain use. Specs Sleeping Bag Shape Wide Mummy - A roomier cut with more leg space and a relaxed sleeping position, slightly more bulk than a standard mummy shape Weight 2 lbs 0.5 oz Insulation 900FP European goose down with Grangers fluorocarbon-free hydrophobic finish (590g / 20.8oz) Main Fabric 10D Pertex Quantum ripstop with fluorocarbon-free DWR Fabric Lining 10D Recycled Atmos(TM) (28gsm) with Thermo Ionic Lining Technology (TILT) ISO Temperature Rating Comfort: 23AdegFLimit of comfort: 10AdegFExtreme: -27AdegF Packed Size 7.9" x 13.8" Sleeping Bag Length 85" Max User Height 73" Internal Shoulder Girth 63" Internal Hip Girth 53" Internal Foot Girth 40" Manufacturer Warranty Limited lifetime