For those ready to step up to down. The innovative ThermoTrap baffle construction of this 45° F/7° C rated bag delivers consistent warmth for backpackers and campers. Q.Shield™ DOWN 650-fill has an advanced treatment applied that resists heat robbing moisture and retains maximum loft in damp conditions. Unique ThermoTrap Baffle construction 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 draw cords easily adjust hood closure. Temp Rating: 45° F / 7° C.