Foldable Travel Backpack for Promotion 1.Material:210D Nylon 2.Size:31*14*44cm,folded:16*12*3cm 3.For traveling 4.Waterproof ... Item Name.Folding Backpack, Backpack, Traveling Backpack, Sporting Backpack, School Bag, Student Bag, Portable Backpack,Foldable ... , shopping bags and so on. Material options include polyester, nylon, jeans, oxford, canvas, PVC ,TC and Non-woven etc ...