COMPARTMENT: Rolling College backpack built-in separate fully-padded laptop pocket hold Laptop up to 18 inches as well as 17 inches Notebook; 45 L Large Main Compartment roomy hold clothing for an overnight trip; Second zippered file compartment to organize bulky books and file; Organizer Compartment with many pockets make your items organized and easier to find; Mesh water bottle pockets at sides; A magic tape pocket at the back is convenient to carry a small towel DESIGN: Water-resistant bottom panel Corner guard and a kick plate protect the bag from abrasion; Corner-mounted wheels provide an easy carrying for adult ; Metal Swivel Hook can be adjusted at any time, Protect from Strap are turned; Lockable Metal Zippers design provide you to lock up the wheel backpack with your own lock, can safe to protect valuables from thieve RELIABLE MATERIAL: This wheeled backpack for adults is well made of sturdy polyester fabric with metal zippers and waterproof bottom panel corner guards a