backpack.
1, school backpack,schoolbackpack,student backpack,
2, can effectively scatter the bag weight and lighten the children's burden
3,extra soft shoulder belts with good elasticity(弹性）
4，helps to straighten back and keep balance,comfortable and ventiate
5,the material is water-proof,dust-proof and easy to clean
6,withtout wigt heavy metals and other posionous substances.
7,humanization workmanship
8,one multifunctional pocket on each side
9,Merial:polyester