Thicker Durable PVC The clear backpack is made from smell-less thicker PVC material, much more durable for everyday use than most backpacks on the market. It is both durable and soft that you can bend it as you need, and it would not crack even in cold weatherReinforced strap stitches: Reinforced cross stitches are adopted to fix the strap firmly; The shoulder straps are specially designed wider than usual to ease the stress on your shoulder; Each strap is sewn on securely and padded for comfortMulti-functional compartments & large capacity: Size: 17 x 12 x 7.5 inches (H x L x W); 1 large main double zipper compartment for binders; laptops; books; etc., with 1 small single zipper inside mesh pocket for phone; cash; cards; etc.; 1 front double zipper compartment for notepads; glasses; etc.; with 1 big and 3 small open mesh slots for pens; tissues; keys; etc.; 2 side mesh pouches for water bottles or folding umbrellas; The clear backpack affords decent room for different purposes