300D dual-diamond heather ripstop/500D poly RPVB coating backpack. Features hidden pockets along the back panel for electronics; padded laptop and tablet compartment; large main compartment with a zippered mesh pocket for organizing small items like pens, keys, and cords; fleece lined glasses pocket; side zipper pockets; lockable zippers and Central Lock Point with Secure Zip™ Toggles for extra security; water-resistant zippers; front pocket with a drain duct to store wet items separately and allow them to dry; ergonomically-shaped shoulder straps and adjustable sternum strap; safety whistle for emergencies. Fits uo to most 17" laptops.