600D PVC emergency backpack Material:600D PVC Size:45H*30W*15Dcm Logo: luminous or reflective OEM is ... . (Pictures and artwork will be great)1. Material (polyester, nylon, canvas, cotton, non-woven fabric, RPET)2. Size (length, width, depth, handle ... length, logo size, pocket size, zipper size)3. Quantity (PCS generally ...