The Karrimor Superlight 3?Sleeping Bag has a three season rating with a single layer polyester fiber fill construction and nylon ripstop shell.. . ?. . . Mummy shaped design.. 3 Season Temperature Rating (Spring-Summer-Auntum). Single layer construction.. Full length zipper draft baffle.. Shell: Soft 40D Nylon Rip-stop.. Liner: 210T Micro Polyester Pongee.. Filling: 150g/m2 Top & 80g/m2 Bottom Micro Polyester Fiber. Spot clean. Imported.