school backpack material:600*600D with pu backing, neoprene, and 1680D with pu backing. lining:210D polyester size:31*15.5*51 school backpack1.material:600*600D with pu backing, neoprene, and 1680D with pu backing.2.lining:210D polyester3.size:31cm*15.5*51cm4.packing details:each in one pp bag, and 12pcs in one carton with the size of 51cm*34cm*56cm5.payment terms:1)30% deposit, and the balance ...