Featuring an integrated comforter in place of a traditional zipper, the Sierra Designs Backcountry Bed mimics the comfort and feel of sleeping in your bed at home. The oversized comforter seals the opening and allows greater freedom of movement, staying tucked as you change positions throughout the night. Featuring a 20d polyester ripstop shell and a 20d polyester taffeta liner, each bag is packed with 700-fill-power DriDown insulation. The comforter features insulated hand and arm pockets for a cozy feel, while a patented self-sealing foot vent allows you to stick your feet out at night to cool off. There's an integrated sleeping pad sleeve that prevents your pad from shifting or slipping out while you sleep. If you prefer to cozy up with a friend or partner, the Duo backcountry bag provides more than enough room for two.