Come and see our amazing products. The backpack is made of waterproof fabric with deep waterproof properties.Large capacity, can put a large number of school supplies.Side bag: There are elastic mesh bags on both sides of the bag, which can be used for holding water cups and umbrellas.The shoulder strap is made of honeycomb, high air permeability and not hot.Back breathable, protect the spine: groove ventilation, not hot.Customized logo available.Price for over 10000pcs is for sea shipment. Pls confirm further with us if any query about packing info, inventory status and time schedule.