Nelson-Rigg SE-3000-BLK Black Medium Deluxe Adventure Dry Bag Made from waterproof and durable 24oz Tarpaulin PVC, with electronically heat welded seams, and an air tight roll closure to ensure no water enters the bag, making it 100 percent waterproof Features a coated outer material to prevent slipping or marking, hi-Visibility reflective accents on straps, front and sides of bag, and removable, adjustable carry handles which can also be used to secure other items on top of your bag A firm base panel helps support bag even when not supported by a rack, the removable internal stiffener helps bag hold its shape when empty, and reflective compression straps easily adjust to the volume of content Securely mounts with heavy duty quick release anodized aluminum cam buckles and nylon webbing while the strong D-rings allow more Survivor bags to be attached Can be mounted across or along seat, tail section, or quickly attached to most factory tail racks or hard saddlebags; the main compartment measures: 20"L x 10"W x 12"H and holds 39.33 Liters