geckobrands Waterproof 30L Dry Bag Backpack Enjoy boating, fishing, beach, team sports and kayaking without worry Large 16"x 9" water-resistant outside pocket Padded shoulder straps with 4 carabineer slots on each strap Chest and waist strap to secure bag when climbing, running and hiking Includes a free carabineer to secure the backpack to your boat, bike, or other gear