I ordered this shower caddy for use in a large, tiled shower unit.  The fact that the caddy attaches to the stem of the shower is a bonus as this anchors the caddy well and makes the two bottom suction cups virtually unnecessary.  The fact that the two shelves are moveable works, too, as this allows for the placement of taller bottles.  This is a well thought out shower caddy; it looks good in the shower and holds enough products for most needs.  I am really hoping that the non-rust claim holds true.  Fingers crossed.