Backpack 1)Material: Nylon,cotton or canvas 2)Different size in available. 3)Various ... , printing school bag, cotton school bag, backpack, fashion bag, Nylon backpack ,water resistant school bag1)Material: Nylon ,polyester or cotton2)Different size&designs is ... Japan etc .We also can produce canvas bag,cotton bag ,nylon bag and oxford bag and so on as below: Cotton ...