Overboard Waterproof Classic Duffel Bag 100% waterproof holdall with Fold Seal System - Roll-neck fully waterproof duffel bag, floating safely if dropped in water. Waterproof front zip pocket - For secure storage. Quick release loop - For a quick access to the main compartment. High frequency welded seams - Providing perfect protection from dust, sand, dirt and water. Internal PVC tarpaulin - bonded to an outer nylon cotton shell providing secure, heavy duty, and durable materials for rough usage.