Exterior: 600D ripstop polyester, waterproof coating, thermally welded seamsLining: cotton polyester (50% polyester / 50% cotton), 190T nylon (chest and bottom)Hardware: chrome-plated zincWaterproof: 3000 mm, breathable: 3000 g/m² over 24 hours and windproofNo rear seamTwo adjustable front straps with quick-release clips and VelcroShoulder gussets / Adjustable cross strapsAdjustable, detachable, and elastic leg straps / Round tail flap