Karston Brings These Awesome School Bags for your Kids. Your little one will love to carry their own backpack which is attractive, water resistant, lightweight, soft and colorful whenever your kid is going to school or going on their first big adventure. This cute school bag is made of soft Polyester Material. Features include water resistant material, spacious compartments, sweatproof padded shoulder straps, double themed pullers, easy to grip padded handles, adjustable buckles, & 2 Bottle Holders. In this bag the child can keep and organize their books, tablet, pencils, raincoat and snacks etc.