Come and see our amazing products. Polyester backpacks. material :Polyester(waterproof) ,The size :13 3/4*9 13/16*21 5/8 inch. we can do more color base on your request. The bag can put the more goods base on you carrying. It is suitable for Travelling, Walking, sport, outdoor, camping, and so on. we have more kinds and good backpacks for you to choose when you send the inquiry to me. Pls confirm further with us if any query about packing info, inventory status and time schedule.