✈ Large Capacity & Expandable Compartment Design: Featuring a main compartment, laptop compartment, expandable ball compartment and side pockets, this computer backpack has a capacity of approximately 28 to 32 liters and can hold a lot of items. Multiple compartments keep your belongings organized. Also, the expandable compartment of this travel laptop backpack is perfect for storing basketballs, soccer balls, volleyballs, sneakers, helmets and more. ✈ Durable Material & Dry-Wet Separation: The backpack with laptop compartment is made of high-quality polyester fabric with better water and tear resistance to ensure long-lasting daily use. The laptop backpack also features a separate PVC zipper pocket for dry and wet separation, which can hold toiletries, cosmetics, wet clothes after exercise, and more ✈ Breathable Comfort & Reflective Strip Design: This travel laptop backpack features reflective strips on the front and shoulder straps to ensure a safe travel experience. Moreover, it adopts a honeycomb design back panel and breathable mesh fabric panels to promote air circulation, ventilation, and cooling. ✈ USB Port Design & Easy travel: This waterproof laptop backpack built-in USB charger outside and built-in charging cable inside, it offers you a more convenient way to charge your phone while walking. This laptop travel backpack also uses comfortable wide mesh shoulder straps and ample sponge padding help alleviate shoulder pressure