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 ... so on. Material options include polyester, nylon, jeans, oxford, canvas, PVC ,TC and Non-woven etc. If you are in ...