The robust Slumberjack Timberjack series of sleeping bags are feature rich, and are designed for maximum comfort and warmth. Her choice for chilly nights, is the Slumberjack Women's Timber Jill 20 Degree Rectangular. With a soft-touch lining and pillow pocket, you're assured a cozy night's sleep, and the amazing value will assure you pleasant dreams.Slumberloft? synthetic insulation. Polyester ripstop shell, soft-touch polyester lining. Layered offset quilt construction prevents cold spots. Anti-snag zipper protection. Draft tube along zipper keeps out cold air and prevents heat loss. Integrated pillow pocket, stuffs into its own storage pocket when not in use. Zip-together feature allows two same-size rectangular bags to be joined, making a double-wide bag for two. Stuff sack included. Regular right zip only.