Saved our Summer vacation to Grandma's! A slip down the stairs resulted in 2 broken metacarpals. We were hoping to get him a waterproof cast so his trip to Florida wouldn't be ruined sitting sideline on the beach. Unfortunately for him, the way he broke them, he was unable to get a waterproof cast. Bloccs was, by far, the most well reviewed product out there and I have to say....my review will be no different. It's fantastic! Not a drop of water on his cast. Our trip to Florida just so happened to coincide with Subtropical Storm Alberto. Bloccs didn't budge an inch through the rough surf. Getting it on and off was very simple. Thank you for putting out a great quality product.