The EcoFlow River 2 Bag is a 30L travel backpack that can fit a 15.6″ laptop along with essentials like clothes, books, water bottles, and umbrellas. It can expand and rolls down to adjust its size easily. The backpack features a roll-top design with release buckle for quick access, durable waterproof materials, enhanced-strength zippers, and breathable shoulder straps for comfort. Additionally, it has space to store and carry EcoFlow RIVER 2 Series Portable Power Stations.