I bought boys sizes to match the adult size I enjoy wearing. My daughter thought they might be reluctant to wear them, but her sons ages 4 and 8 were thrilled to wear them, and now they make a great photo op for us. We bought two more for the other grand boys and then three more women’s sizes for my wife and two daughters and of course two more mens’ sizes for the son-in-laws. Will make a great photo op for a beach scene or evening pool scene later this year.