MARK RYDEN Travel Backpack for Men, 40L Airline Approved Carry on Backpack with USB Charging Port, 17.3 Inch Waterproof Business Laptop Backpack (12.6 x 8.0 x 19.6 Inch)

▶[Dimensions]19.6*12.6*5.9 inch (Normal). 19.6*12.6*9.8 inch(Expanded), fits for 17.3 laptop. Package: backpack x1, internal usb cable x1. Design to fit the allowed maximum size of an IATA flights, enough space for your personal stuff for a long journey.
▶[Large and expandable roomy]Compressed capacity of 25L. Full-expansion zipper creates 30% more packing space—40L. Three main pockets which includes 7 compartments inside -- padded laptop sleeve x1, tabelet sleeve x1, mesh compartment x3, basic compartment x2. WHAT’S MORE, there is a quicker access front zip pockets and a anti-theft backside pocket.
▶[Multiple carrying backpack] 【YKK zipper】 smooth and durable, smooth and durable. Use as a daily backpack, a flight approved carry on bag or attach this bag on the luggage for hands free: a strap at back allows backpack to attach on the luggage handle tube and hide-away backpack straps.Selection of high-quality smooth SBS ZIPPERS and durable water-proof polyster, special cushion for back and shoulder strap which relieve your pressure effectively.
▶[Ergonomic comfortable design travel backpack] Multi-panel Airflow Design provides extra padding for comfort and maximum back support.Adjustable waist straps and breathable mesh shoulder straps with plentiful sponge passing help relieve the stress from your shoulder.
▶Convenient external USB port travel backpack: built-in charging cable provides a more convenient way to charging your phone, free your hands from power bank.