Shell: 10D UL Nylon treated with DWRLiner: 15D nylon soft touch, high density weave850+ loft Ultra-Dry Down® (90/10 European goose down)1/3 length #3 YKK zipperSew-through transverse baffle construction over legs, box-wall baffles over torsoIncludes lightweight Ultra-Sil® compression bag, mesh storage cell and laundry