Use it for below-zero conditions, to add warmth without a lot of weight. It's best to wear a light layer and light socks inside, so you don't get wet with water vapour.
- Waterproof, non-breathable silicone-impregnated ripstop nylon keeps warm air next to your skin, and reduces moisture build-up in your bag.
- Mummy design with hood.
- Drawstring on hood.
- Mesh stuff sack attached at foot box.
- No zipper.