Advantages we have: – Water resistant Oxford spinning with inner Twill polyester material, durable and lightweight enough. Perfect for your business traveling, weekend getaways, school and other outdoor activities in daily life. – Padded straps and comfortable on the shoulders. – Exterior USB port design helps you can leave your power bank in the bag and charge your phone on the go. – Large capacity provides the separated space for your Laptop, cell phones, iPad, books, clothes, passport, pen, keys, wallet umbrella, bottle and more. – Padded laptop compartment protects your laptop well, fits for 15.6 inch laptop. – Comes with a combination lock, which can ensure the safety of your belongings. – Dimension is: 12.0″(L)*19.5″(H)*5.0″(W),fitting under the seat on a plane. What you get: 1x Backpack 1x Combination Lock 3-year Warranty and lifetime friendly customer service