This 20" W x 12" D x 12" H bag has a DuraMax body and a Ballistic Cloth bottom. It has a seam-sealed watertight main compartment, sleeves and pockets for notebooks, transmitter, bumpers, cell phone, pens, water bottle and more. It features a waterproof pocket for valuables, key chain holders, two roomy exterior pockets, huge front bellows pocket, and a zippered mesh flap. The detachable vinyl-coated mesh "wet bag" is great for storing items that are still damp. It has an adjustable shoulder strap and no-slip ABT shoulder pad for comfort and a blaze orange "locater" flag for safety.