40D 85 g/m(2)/4.1 oz lyd DryVent 2.5L100% nylon ripstop. Waterproof, breathable, seam sealed DryVent shell 100% windproof fabric. Attached, fully adjustable hood. Storm flap with Velcro closure covers front zipper. Zippered underarm ventilation. Covered, secure-zip hand pockets. Stows in left hand pocket. Adjustable Velcro tab cuffs. Drawcord and toggles at hem. WATERPROOF: Impenetrable moisture barrier to guarantee dryness. Packable/Stowable: Highly compressible layer for emergency use.