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-PFC 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.