Gelert hebog classic sleeping bag the gelert hebog classic sleeping bag is constructed with polyester shell and soft touch lining with a mono fibre polyester mix filling this sleeping bag has a two season rating and packs away into a durable stuff sack for easy transportation and storage sleeping bag one man design stuff sack shell polyester filling 250gm2 mono fibrepolyester mix comfort temperature 4 degrees celsius to 84 degrees celsius rating 2 season