A durable, strong and abrasion-resistant option. The Big River Dry Bag uses a 420D nylon fabric with a TPU lamination. This is the perfect storage bags to keep your gear dry for all your outdoor activities. A white interior laminate affords greater visibility, and hypalon lash loops allow secure stacking or attachment to watercraft, motorcycles and other equipment. • TPU laminated fabric with 10,000 mm hydrostatic head. • Super strong, waterproof and abrasion-resistant 420D Nylon fabric. • Waterproof hypalon roll-top closure does not wick moisture. • Best use: Paddlesports, overland, bike packing. • Closure: Hypalon roll-top closure. • 420 Denier heavy duty Nylon fabric. Details. • Repair buckle size: 3/4 in / 20 mm (with two stainless steel pins). • Dimensions: 15x10x33 in / 38x25x85 cm. • Weight: 10.3 oz / 293 g.