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

Whether on backpacking trips or camping outings by car, the Boost 650 offers dreamy 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. The semi-rectangular shape provides significantly more space inside than a mummy sleeping bag – you feel free and can sleep in any desired position throughout the night. However, more space requires more body heat to keep warm. This is where the WarmZip comes into play. With the raised zipper, the shape of the Boost 650 transforms from a semi-rectangular sleeping bag into a heat-efficient mummy sleeping bag. The down is distributed around the body, reducing the space needed for warmth. With the WarmZip, the thermal performance of the Boost can be increased by up to 6 °C.