【Large Capacity and Expandable】: This expandable travel backpack offers you more packing capacity of up to 42L for 3~7 days of travel essentials, and the computer compartment can hold a 17-inch laptop. 【Designed for Travel】: This carry on backpack is flight approved, you can travel anywhere you want, and it has a side handle that can be turned into a suitcase backpack. There is a luggage strap on the back, which can be placed on the luggage. 【More Durable Material】: The laptop backpack is made of durable, water-resistant polyester and anti-scratch material. The sturdy metal double zipper and upgraded reinforced stitching make it last longer. 【Comfortable Shoulder Straps】: Breathable sponge mesh design on the backside and concealable shoulder straps help with air convection, ventilation, and heat elimination and help relieve the stress from your shoulder. 【4 Packing Cubes and USB Port】: This suitcase backpack comes with four packing cubes, which can hold travel-size toiletries. Keeping your belongings neater and more organized. Features a USB port, and you can charge your phone on the go. Strap Type: Shoulder Strap Care Instructions: Hand Wash Only Water Resistance Level: water_resistant 1