Zipper Bed

- increase or decrease the size of an opening to allow or restrict the passage of objects, as in the fly of trousers or in a pocket.
- join or separate two ends or sides of a single garment, as in the front of a jacket, dress or skirt.
- attach or detach a separable part of the garment to or from another, as in the conversion between trousers and shorts or the connection / disconnection of a hood and a coat.