... bag 1)With two shoulder strap 2)Material:600X300D/pvc 3)delivery: 5 days for sample,35 days for mass ... promotional school bags :Material for school bags : 600D x300D/PVC Size for school bags: 41x31x14cm Color for Teenage school backpack ... our bags such as Polyester,Nylon, Microfiber, Canvas, Satin, clear PVC, T/C Cloth, Mesh, non-woven, , PU leather etc. We ...