Specification: Item No.: 13336 Product size: 23CM X 26CM X 51.5CM Material: Stainless steel 201 Finish: polished chrome plated. MOQ: 800PCS Product Features: 1. QUALITY STAINLESS STEEL CONSTRUCTION: Protects against rust in your bath or shower. It is durable in the humid bathroom surrounding. 2. IDEAL STORAGE SOLUTION FOR SHOWERS WITH GLASS/DOOR ENCLOSURES: Caddy easily mounts on door rail, with no tools needed. And it is portable, you may put anywhere of the screen door. 3. ROOM FOR ALL YOUR SHOWER ESSENTIALS: Caddy includes 2 large storage baskets, soap dish and holders for razors, washcloths and shower poufs 4. YOUR BATH ITEMS STAY DRY: Installation on shower door rail keeps bath products out of the way of your shower 5. FITS ON ANY STANDARD SHOWER DOOR ENCLOSURE: Use caddy on any enclosure with a door up to 2.5 inches thick; includes suction cups to keep caddy firmly against shower door Q: Will this work with a sliding shower door? A: If you are talking about sliding shower doors in a tub that has an overhead track, yes it will. I would not hang it on the part that moves, however. Hang it over the upper track.  Q: Do you think this caddy will work on a towel bar? Are there hooks that would be on the outside of the shower enclosure? A: I don't think it would work well on a towel bar, because it does have two hooks on the back side. I think it might hit the wall behind the towel bar. I have put the caddy on the back wall of my shower and use the hooks outside the shower for towels.