Expandable Business Waterproof Laptop Backpack with USB Port(Black)

Features:1. Made of high-quality fabrics, comfortable to the touch, wear-resistant and stain-resistant2. Side USB port design makes charging more convenient3. Expansion design, the reserve is increased by 5 cm4. Large capacity design to meet daily storage needs5. Honeycomb breathable mesh, rapid heat dissipation, comfort and burden reduction6. Trolley pocket design makes traveling more convenientProduct parameters:1. Material: film2. Function: waterproof, wear-resistant, earthquake-resistant, capacity expansion, load reduction3. Computer size: 16 inches4. Product size: 44 x 31 x 11-16 cm5. Weight: 860g6. Note: Only backpacks will be shipped, nothing else!