simplehuman Adjustable Tension Shower Caddy with Plastic Trays I'm adjustable: adjustable shelves slide up and down to make room for tall bottles Secure fit: reinforced aluminum pole with high compression spring fits securely between your floor and ceiling No tools needed: just extend the caddy to install Convenient storage hooks: hold a razor, loofah, toothbrush or other accessories Quick dispensing: store bottles upside-down for quick dispensing