MARK RYDEN Travel Backpack for Men, 40L Airline Approved Carry on Backpack with USB Charging Port, 17.3 Inch Waterproof Business Laptop Backpack

Expandable Large Capacity: Compressed capacity of 23L, full-expansion zipper creates 30% percent more packing space, capacity up to 40L, total three layers. The first compartment can store your phone, passport or other small items etc. The second compartment can store clothes and daily supplies. The third compartment is a laptop compartment, which can store a 17.3 inch laptop as well as 15.6 inch, 14 inch and 13 inch Laptop. ^^ USB
Charging Port Design: The usb backpack comes with a charging port you can link your phone to and easily charge during outdoors and travel. Place your power bank inside the bag and connect your phone to the outer port (built-in charging cable inside). Please note that this travel bag doesn't power itself, usb charging port only provides easy access to charge.
^^ Multi-functional Design: Business backpack with back U shaped three-dimensional ventilation design helps with air convection, ventilation and heat elimination. Wide breathable mesh shoulder straps and back with plentiful sponge pads help relieve the stress from your shoulder. The back of the backpack luggage strap design makes the journey easier. In addition there are anti-theft pocket design, shoulder strap non-slip buckle design, fixed buckle design, card pocket design, etc.
^^ Water Resistant Backpack: The computer backpack is made of Oxford fabric with high density nylon lining, which has good waterproof performance, protects your belongings from splashing water and rain, is perfect for traveling, working, daily life, etc. ^^ High
Quality YKK Zippers: Smooth two-way zippers are a very important component of the men and women casual daypack backpack, which are made of heavy duty metal material, wear-resistant, anti-oxidated and easy to slide and work smoothly. The zipper pull-tabs are durable, good-sized and elegant in design.
^^ Warm Tips: Due to the backpack is not full of items, it is normal that there is a difference of about 2 ~ 4 cm in manual measurement, and the actual product shall prevail.