No more cold feet! Ultimate sleeping comfort: warm, snug and lightweight booties for cold feet, even when inside the warmest sleeping bag. Feather-light Pertex QuantumTM fabric meets 700-fill goose down. Similar to a sleeping bag, there are no cold spots. Adjustable cords keep the Booties in place without being tight. Socks pack small into a fist-sized stuff sack. Weight: 95g Stuff sack: 15g Material: Pertex QuantumTM ripstop nylon (30 g/m2) Packed: 10x10 cm