Thicker durable PVCThe clear backpack is made of 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 comfort.Apply in various occasions The transparent backpack perfectly meets the requirement of colleges workplace; It's also convenient for you to check everything you need is ready and easy access.