Lafuma GR 20-Degree Synthetic Left Zip Sleeping Bag, Anthracite Blue Features: Draft tube, anti-jamming construction, shoulder collar, interior Velcro pocket, anatomic foot space Double-ended zipper with glow-in-the-dark zipper pulls Filling: Synthetic Fiber. Top: Maxi Loft Fiber 175 g/m^2 X 2, Base: Maxi Loft Fiber 125 g/m^2 X 2 Outer cover: 40 D Polyamide Ripstop with water repellent treatment Lining: 40 D Polyamide Ripstop