Multi Pocket light leisure mens Small Backpack Travel waterproof small backpack fashion sports mens small bag

There is a zipper pocket at the bottom of the front of the bag, a zipper pocket at the top (not to the bottom), and one insert pocket on both sides, which can hold a water cup or folding umbrella with a diameter of 7cm. The main pocket is double zipper, lined with polyester, and there is a flat insert pocket inside. There is cotton clip on the back of the bag, the mesh on the back is breathable, and the double shoulder straps have anti-skid shoulder design

Small size: bottom length 17cm, bottom width 13cm, height 28cm, net weight: 0.34kg, small size barely 11 inch flat plate

Large size: bottom length 19cm, bottom width 13cm, height 32cm, net weight: 0.38kg, large size 12 inch flat plate, 16 open book

Oversize: bottom length 22cm, bottom width 16cm, height 30cm, net weight: 0.44kg, oversize can hold A4 books and 14.4-inch notebooks