Review (4/5): It works
I bought these for my daughter, she loves them for her thick hair. The button was frustrating at first but once you get the hang of using it, you won’t snag your hair as much. Very minor. She said it’s easier to use than the regular hair tie and can make it tight as she wants with out smushing her fro. Also makes for the perfect poof. Does a much better job of holding up the back of her hair up than the other things she has tried.