Bought it for my mom who has a history of heel spurs. Placed the insert given by podiatrist. At first one of the corners bother her on the top where to bottom Velcro belt "closes" but then it felt better after a while. She loves them and I know these are going to help her also with her feet.  Great purchase and of course no strings to tie is great for my 83 y/o mom. Hope she gets to wear them for many years more.