olycarbonMultipurpose box protects against moisture, dust, dirt, and sand; great for boating, kayaking, fishing, and moreRubber key clip and strap attachment point; O-ring closure for a watertight sealMade from shatterproof translucent polycarbonate; large size measures 3.5 x 6.8 x 8 inches with 1.5-liter capacityNot intended for climbing, load-bearing use, or full submersionBacked by a manufacturer??s 1-year limited warrant