The reverse wearing of the zip head is also called back wearing, which means that the teeth of the zipper are on the reverse side compared to the normal way of wearing. Reverse pulling and reverse wearing are actually the same thing, one refers to the zipper head and the other refers to the way of pulling. Reverse pulling of the zipper means that the handle is on the reverse side, which is the reverse wearing of the zipper head. If the teeth of the chain and the zipper head are on the same side, it is called forward wearing, and if they are not on the same side, it is called reverse wearing.