Mountain Hardwear Unisex Ratio 15F/-9C Down Reg Sleeping Bag Synthetic QShield Down 650-fill down has an advanced treatment applied that resists heat robbing moisture and retains maximum loft in damp conditions Unique Thermo Trap Baffl locks down into smaller chambers for less down migration, even loft height and more consistent warmth Comfort mummy cut efficiently maximizes warmth and minimizes weight without constriction, down-filled face gasket comfortably blocks drafts at the hood opening Insulated draft tube with anti-snag panel prevents cold spots along zipper, single-handed drawcords easily adjust hood closure Full-length zipper with double sliders for versatile ventilation, durable and lightweight nylon shell with DWR treatment repels water