I have medium long semi thick wavy hair, and all my hair fits up in the clip. The material is giving, so driving or lying on your back isn't as uncomfortable as with a "regular" plastic clip. My daughter has very long, curly, and thick hair, waiting for the bigger size for her hair, but she loves mine for putting up some of her hair. She too appreciates the giving material. They are a little pricey, but I'm sure we'll purchase more.