Our most versatile sleeping bag available, in colder temperatures you can cinch down the technical hood, zip up the draft-tube protected zippers and allow the 750+ Ultra-Dry Goose Down to keep you warm. In warmer conditions, the Free-Flow Zip system lets you unzip in different configurations for superior ventilation and even open up flat to turn the Ascent sleeping bag into a quilt on the warmest of nights. All of the above make the Ascent a true three-season backcountry bag, one of very few on the market. Close the snaps at the shoulders, open the footbox zipper and wear the Ascent at camp - hardcore adventures don't have to be hard all the time. Features RDS-certified, 750+ fillpower goose down with a non-PFAS 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-PFAS 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
