I ordered these as an afterthought, and I’m glad I did. My hair is very thick, and I have tried many hair elastics of this kind. All have been thinner than these. Some have not been strong enough to hold my pony tail in place from the start. Others have lost their elasticity after a short time. These bands are the best I have tried. They hold my hair in place all day. They are very strong, and I am confident they will last.