The Finley collection 18"" rolling backpack is made of 600D polyester, and includes a water resistant molded bottom to ensure high durability. There are various ways to store personal items with this backpack. It includes a spacious front organizer pocket, 2 side mesh pockets and strap pockets as well. The ergonomic padded adjustable shoulder straps make the option to carry an ease, while the push-button telescopic locking handle and in-line skate wheels provide a smooth and swift roll. There is extra safety ensured with the reflective stripes located in the front of the backpack and straps.