Isosceles Storage System carries all your boots, helmet, and gear; Durable and tough, water-resistant coated 600 denier polyester; Side boot pockets with air/water drainage grommets; Coated water-resistant central compartment for gear; Water-resistant tarpaulin bottom; Closed-cell foam padded back; Adjustable neoprene padded shoulder straps; Internal zipper pocket for personal items; Zipper mesh side pockets and top lid pocket; Double locking, self-repairing nylon coil zippers; Volume: 3200 cu in / 53 L