Boost 650 20F/-6C Long Winter Boots Larger cells in the heel

Larger cells in the heel provide plush landings

massive hydration

and added a double-lace lock that makes getting in and out even easier

Side-zip entry system and adjustable leg openings make them easy to wear with boots and gaiters

Compatible with 3

Boost 650 20F/-6C Long Winter Boots Larger cells in the heelComfort is not one size fits all, which is why the Boost 650 empowers you to customize its shape to find your perfect balance of space and warmth. As a spacious semi rectangular sleeping bag the Boost provides all the room you need to side sleep, shift about, spread out and relax. The semi rectangular shape gives you considerably more internal space than a mummy bag youll feel unrestricted and free to sleep in whatever position you want all night