EcoFlow River 2 Protective Bag with Carry Strap. Compatible with all River 2 power stations: Provides convenient storage and transport for River 2, River 2 Max, or River 2 Pro. Durable Material: The roll-top travel backpack combines comfort and style with a long-lasting design. Made from extremely durable, waterproof material. Reinforced zippers and buckles secure your items, while the breathable S-Curve shoulder straps and back panel ensure carrying comfort. Roll-Top and Release Buckle: The backpack can be easily folded over to adjust its size and secured with a sturdy buckle. Access to items is quick and convenient through the zipper openings at the top or back. Flexible Storage: This 30-liter travel backpack accommodates a 15.6-inch laptop as well as all your essentials like clothing, books, water bottles, and umbrellas. It can expand to 42 cm x 12 cm x 32 cm and roll down to 38 cm x 12 cm x 32 cm. Ideal when you don't need your EcoFlow power station.