Product Dimensions: Length*Width*Height :33*22*45 cm / 13*8.7*17.7 inch; Width can extend to 34cm/13.4 inch. External Charging Interface: This unisex backpack is equipped with an external charging interface, allowing you to conveniently charge your electronic devices on the go. Wet and Dry Separation: The backpack features a wet and dry separation design, keeping your wet and dry items separate and organized, preventing cross-contamination and maintaining cleanliness. Scientific Compartmentalized Design: The backpack is intelligently compartmentalized, offering multiple pockets and compartments to organize your items efficiently, making it easy to find and access your essentials. Travel and Short-Distance Luggage Bag: Designed for travel and short-distance trips, this backpack serves as a versatile luggage bag, providing convenience, comfort, and style for your journeys.