... mass promotional school bags :Material for school bags : 600D x300D/PVC Size for school bags: 41x31x14cm Color for Teenage school backpack ... :1.With adjustable padded shoulder straps.2.A main zippered compartment and a large secondary comparment with interior organisation.3.Side ... our bags such as Polyester,Nylon, Microfiber, Canvas, Satin, clear PVC, T/C Cloth, Mesh, non-woven, , PU leather etc. We ...