The efficient close-cut design of Trekkinglite -5°offers an excellent warmth-to-weight ratio and minimal packed size for extended treks in spring through autumn. This bag, with its added insulation and warmer rating is also an excellent choice for cold sleepers in summer. It is built with the lightest materials in combination with high quality European down. A 20 D ripstop nylon shell is supple and durable and a DWR-free, 30 D nylon lining is comfortable against the skin. Keys to Trekkinglite's efficient warmth are the new propotional differential cut (outer shell and inner lining sized for maximum down loft) and the multi-chambered 3-D foot box, which wraps the feet in 11 individual down-filled chambers. Additional warmth at the neck and shoulders is provided by a plush, adjustable draft collar. The hood accommodates an EXPED pillow, opens wide in warm weather, but contours closely around the head when closed in cooler conditions. Waterproof stuff sack and mesh storage duffle bag included.