ergonomic 600D*300D backpack school bag kids bag girls bag with better price (all bags fabric made by our factory). 1.ergonomic 600D*300D backpack school bag kids bag girls bag with better price (all bags fabric made by our factory). ,customer's logo can be printed on2. environment friendly and ergonomic, the material used are water proof and up to the 6P standard.3.we have our own R&D team,OEM & ...