Big Agnes Women's Sidewinder SL 20 terramar and ½" (15 mm) closed-cell

and ½" (15 mm) closed-cell base layer

Antitwist fixing to hold lower carabiner in place

10mm closed cell foam reservoir insulation

A contoured EVA midsole gives you arch support that most sandals lack

accurate measuring

Big Agnes Women's Sidewinder SL 20 terramar and ½" (15 mm) closed-cellSpecifically designed for those who sleep on their sides, the patent pending Sidewinder Series was engineered to ensure warmth, comfort, and ease of use no matter which side you're on. Constructed with features you expect from a traditional mummy bag with additional body mapped insulation to optimize warmth where you need it and minimize pressure points and other side effects. The Sidewinder SL is a side sleepers dream bag with technical features that