Our daughter broke her arm a couple of weeks before we were due to go away. I can't recommend the BLOCCS cast covers strongly enough. We used it several times a day (often for longer than the recommended time) and in 2 weeks the cast did not get a drop of water on it. You made a 6 year old girls holiday - without it I think we would have cancelled. We did take 2 but only needed one - only comment from my little girl was "they should make these in pink as well!" Thank you & well done on a brilliant product.