Captain Stag Blacker Envelope Sleeping Bag 1000 M-3474 [Product Description] The outer fabric is made of lightweight and durable polyester (water-repellent finish). The lining is made of polyester microfiber, which is soft to the touch like cotton and has excellent heat retention and quick-drying properties. The filling is made of hollow polyester (hollow fiber), which is lightweight, highly insulating, and resistant to moisture. Quilted stitching prevents the filling from shifting. Can be used as a double sleeping bag by connecting two sleeping bags of the same type. Includes a storage bag for easy portability. Materials: Outer fabric/100% polyester, Lining/100% polyester (microfiber), Filling/1000g polyester (hollow fiber) Storage size: (approx.) Outer diameter 22 x height 41 cm Recommended temperature range: (approx.) 10℃~ [Product Condition] Condition: New. Unopened. Notes: Please ask any questions you may have.