Feature: luggage/ suitcase Strap on the back is great to slide over the luggage tube and attached to your rolling luggage securely for easier transport. Ease The heavy weight. , less burden on your shoulder and back when on the go. the hidden theft proof pocket designed on the back sits up against the wearer's body. Anti-pickpocket back pocket is difficult to steal personal items. external pockets on both sides are made of elasticized mesh, expands to secure various size water bottles and compact umbrella backpack with charge port. Usb charger port is a convenient external connection, It offers an easy access to charge your devices. Hook up your phone and be on the go. Headphone interface provide convenient to listen music. 100% brand new and made of high density and water repellent polyester fabric, not easy Get wet and ensure long lasting usage separate laptop compartment: fits 17 15. 6 15 14 13 inch laptops and MacBook(laptop over 17inch is not recommended)worry-free : we are committed to provide customer unique and high quality backpacks, contact us if you have any issue, We will reply with you within 12 hrs.