Our little boy Noah has severe hemophilia, when he started crawling his knees were bruising horribly. I looked on the internet and found the Snazzy Baby website. They looked like they might be just what Noah needed. Once we received them they help his knees greatly. He was able to crawl without lifting his knees all the time, and his bruises got much better. Now that he is walking (all over the place) we plan to use them when he is playing outside with his big sisters!