Designed to withstand extreme conditions that demand toughness and abrasion resistance, Sea to Summit's Hydraulic Dry Bag is made with 600D waterproof fabric and welded construction for super heavy duty performance. TPU laminated 600D heavy duty waterproof fabric high performance and abrasion resistant. Nonwicking TPU roll top closure with innovative interlocking profile that is secure and waterproof. Welded construction for durable waterproof seams and snag free seam profile. Durable PVC free and UV resistant fabric sheds water and does not crack in extreme cold. Unique molded interlocking closure securely seals the bag for waterproof performance. Oval base to resist rolling and take up less room when stacked. Features a replaceable buckle with stainless steel pins. Heavy duty Hypalon lash loops are RF welded at the sides and provide secure attachment or lashing points. Dimensions for oval base and height: 14 x 10 x 33.5 in.. Volume: 65 L 3966 cu. in.