Therm-a-Rest Boost 650 20 Black Diamond Zippered main compartment with inside

Zippered main compartment with inside mesh pocket and two smaller pockets

Ecology and range

The spout is shaped to optimize flow and provide a natural drink experience

FluxRing technology allows Flash to heat with extremely high efficiency

Therm-a-Rest Boost 650 20 Black Diamond Zippered main compartment with insideDescription Features Specifications Videos Comfort 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 bagyoull feel unrestricted and free to sleep in