Point 1: With an interior waterproof pocket and a waterproof pocket, it is convenient for you to store your snacks or snacks after you have done it. Point 2 High difference in the position of the thread fastened on the left and right side The gusset is woven with thread. The position of the thread is different from left to right. Although the right side is low, the gusset has a width and a height difference so that the fan can fit easily.