The vaude ice peak 400 xl down sleeping bag boasts all the great features of the 400 model but is super sized for a super snuggly sleep this highly technical sleeping bag is mummy shaped filled with 9010 grey duck down this classic shape with the bag narrowing towards the feet makes for a cosy fit and great insulation by using as little material as possible mummy sleeping bags are lightweight and pack down small the ice peak 400 xl is filled with 480g of highly insulating grey duck down this wi