Tigernu T-B9836 3-in-1 Detachable Men Backpack Convertible Travel Laptop Bag for Sports & Commuting 1. Men's 3-in-1 modular backpack: Smart and multi-functional design, can be disassembled into an independent main backpack, crossbody bag and digital accessory bag, suitable for sports, business trips and urban commuting scenarios. 2. The backpack is equipped with compartments for laptops and tablets, and the bottom is designed with shock-absorbing air cushion particles to effectively resist vibrations and impacts. The phone pocket can hold a phone, data cable and charger. The crossbody bag can hold daily toiletries. The two front pockets can be detached downward for easier access to items. The hidden side mesh pocket can hold a cup or umbrella. When the mesh is closed, it naturally integrates with the side of the backpack, providing practical storage space and a clean, smooth appearance. 3. Capacity: Dimensions: Backpack: 30 x 46 x 19 cm, Crossbody bag: 24 x 18 x 5 cm, Phone pocket: 21.5 x 10.5 x 4 cm. Can hold a 15.6-inch laptop, tablet, clothes, folding umbrella, water bottle and other daily necessities (for reference only). The backpack has a 25L large capacity and can open 180 degrees. 4. The backpack is equipped with an internal charging cable and an external charging port, allowing you to connect your phone charger to the charging cable inside the backpack for charging. 5. The breathable back panel creates a comfortable space, providing continuous ventilation and breathability, making your backpacking experience more comfortable. The S-shaped spine design ensures you won't feel uncomfortable even after long-term use. 6. Made of high-tech waterproof twill leather film composite material, the water droplets feel smooth and won't seep through. Whether commuting, outdoors or in the rain, you can stay dry and comfortable throughout your journey! 7. Tigernu floating zipper design experience original research and development technology. Through ingenious structural engineering, the groove puller and zipper achieve "0" contact, reducing