Women's Nike Gym Club Training Duffel Bag SECURE STORAGE, SUPER-TOUGH CONSTRUCTION. Women's Nike Gym Club Training Duffel Bag keeps all of your gear protected and organized with durable, water-resistant fabric, a spacious dual-zip main compartment and multiple pockets. DWR (durable, water-repellent) nylon fabric creates a strong exterior. Dual-zippered main compartment keeps gear stored securely. Dual handles and adjustable, detachable shoulder strap for custom carrying. Single easy-access pocket provides convenient storage space.