Therm-a-Rest Boost 650 32F/0C Small Meadow Green

Whether on backpacking trips or camping outings by car – the Boost 650 offers incredible comfort for a restful sleep under the stars. With its innovative design that allows you to change the shape of the sleeping bag and add more warmth when needed, the Boost is one of the most comfortable and versatile sleeping bags available. Its semi-rectangular shape provides significantly more space inside than a mummy sleeping bag – you’ll feel free and can sleep in any position you desire all night long. However, more space requires more body heat to keep warm. This is where the WarmZip comes in. The elevated zipper transforms the shape of the Boost 650 from a semi-rectangular sleeping bag into a heat-efficient mummy sleeping bag. The down is distributed around the body, reducing the space required for warmth. With the WarmZip, the warmth performance of the Boost can be increased by up to 6 °C.