This type of automatic stretch wrapper uses a vertically oriented ring to wrap stretch film around a product. When product is wrapped vertically by a horizontal ring that moves up and down, it is called a ring stretch wrapper. When using a ring stretch wrapper, product is placed in the center of the ring. The ring supports a carriage of stretch film, which travels along the inside of the ring as the ring moves up and down over the product. Ring stretch wrappers are able to apply stretch film at very high speeds.