• Nylon
• RDS-certified, 750 fillpower goose down with a non-PFC Ultra-Dry Down treatment to stay drier in damp conditions
• Free Flow Zip System offers excellent temperature regulation and multiple sleeping bag configurations
• Thermally-efficient, more relaxed mummy fit, room in the hood to fit an Aeros pillow and the option to zip couple with a compatible Sea to Summit Women's bag to deliver space for two comes standard
• Lightweight 20D recycled nylon shell with a non-PFC DWR finish to protect against wind and moisture and a 20D recycled nylon liner for greater comfort
• Box baffle construction throughout with vertical baffles in the torso to minimize down shift and maximize the retention of warmth, Sea to Summit Guarantee is offered for the Lifetime of this product, ,