Description of Outdoor Research Hydrolite Dry Sack #1 Tour a melting backcountry with confidence: HydroLite™ coated fabric, taped seams, and a roll top closure gives this ultralight dry sack a waterproof seal against wet conditions. A durable buckle secures the plastic-stiffened top closure and a webbing bottom handle provides an easy carry point. Features: HydroLite™ coated fabric is waterproof and ultralight Waterproof taped seams Roll top waterproof closure Durable buckle secures roll top Webbing bottom handle