I bought this to use in my backyard pool. My pool is medium-sized and kidney shaped. The suction cups stick to the border tiles (the ones inside the pool at the upper edge) and hold very well. Since my border tiles are not smooth, I had to use the enclosed kit to adhere the four, clear plastic plates to my border tiles. It was super easy and everything you need is included in the kit. The plates are very thin and are not noticable once they are installed. I have really enjoyed having the ability to swim in place instead of making a lot of short laps over and over. I love that the inflatable belt lets you swim face down or face up, just by turning the belt around. The wrist and ankle straps also provide a good resistance work out. I would definitely recommend this product - it works exactly as it is described and it is so easy to use!
This system is exactly what I was looking for. Very easy to set up. I have 2in tiles that rim my pool, so I had to use the provided plexi-plates so that the suction cups would hold. I was worried what it would look like, and it turned out the plates are practically invisible. If you don't know where the plates are, you can not see easily see them even when you are right next to them. The silicone adhesive held tight even though I had to install them while half was under water. During my first go once the system was installed, I swam as fast as I could to see how well the cups held, and they never gave way. Have already logged a few hours with it, and I love it! Great Product!