Couple a Women's Specific Trek to a Unisex Trek for the perfect two person camping/travel sleep environment. The Free-Flow Zip system allows unparalleled ventilation so you can open a Women's Trek up to use as a quilt in warmer weather, or secure the snaps around your shoulders, open the footbox zipper and 'wear' the Women's Trek around camp. 650+ fillpower duck down with a non-PFAS Ultra-Dry Down treatment keeps you insulated in damper conditions. Slip an Aeros Pillow into the hood and enjoy a great night's sleep - wherever your travels take you. Features RDS-certified, 650+ fillpower duck down with a non-PFAS Ultra-Dry Down treatment to stay drier in damp conditions Includes a recycled 20D polyester shell with a non-PFAS DWR finish blocks wind and moisture, while the polyester liner provides pure comfort Free-Flow Zip System offers excellent temperature regulation and multiple sleeping bag configurations Tapered-rectangular women's specific fit is designed for spacious comfort when you're camping or traveling Sea to Summit Guarantee is offered for the Lifetime of this product Features: - Semi-rectangular women's specific fit is designed for spacious comfort when you're camping or travelling