The 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 so you can bend it as you need, and it would not crack even in cold weather. 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. The transparent backpack perfectly meets the requirement of colleges and workplaces. The price shows a single backpack.