Product information: 
 Bag size：In the 
 Capacity:20-35L 
 Packet internal structure:Zipper pouch, cell phone pouch, ID bag, computer jack bag 
 Open cover mode:zipper 
 Applicable gender:Unisex/unisex 
 Material:polyester 
 Function:Waterproof and wear-resistant
 
 Packing list:
1*backpack