... Canvas,PU/PVC,Satin,Non-woven,Knit large front zipper pocket school boy book bag folding backpack Description:Material: co-friendly material ... do the order.Packing & Delivery:Packing details: 1per/opp bag, 50-200 pcs/ctn, Your requests about the packing will ... and elongation, good air permeability, non toxic. Low resistance and large dust retaining capacity. Urable, reusable, washable.pls send us the ...