This is a very cleverly designed product, simple to use. The cuff is a good size and comfortable. The filling and emptying works well, though a few drips each time you disconnect the tube. The foil disc to lay on top of the ice/water was torn across the middle when it arrived, so I may try and use something else from around the house. The iced water you feed into the cuff is more comfortable than more rigid ice packs, but doesn’t stay cold enough for very long, so you are constantly emptying and refilling, but that, as said above, is easy to do. I find the cuff only stays properly cold for 10/15 minutes, using the minimum amount of water and maximum amount of ice in the container.I think it is overpriced for what it is, but it is useful.