599s Cool High School Backpack For Boys - DarkGrey The HotStyle Basic Classic 599s backpack is made from 600D water resistant polyester which complying to the Oeko-Tex Fabric Standard 100, eco-friendly and super durable All stitching of this cute rucksack is reinforced and featues YKK branded zipper which is strong and smooth to operate. Order contains 1 year, easy going quality warranty Lightweight construction. Features ergonomic padded shoulder straps and back panel ensures all day breathable comfort Dozens of internal organizers all items tidy. Built-in Padded laptop sleeve fits most 15.6" laptop computer. Dual side water bottle pockets for convenient storage This versatile-minimal, unique and classic designed bag fits your everyday. Perfect for teens at school, also ideal to serve as travel bag