I had an ankle fusion that failed and was given the choice of amputation or a custom molded brace, duh, I got the brace.  The lace that came with it would loosen up and kept coming undone.  I searched the internet and these seemed suitable, although I did not need 3 pair, it was worth the price to try them.  They are perfect, they stay tight from bottom to top and do not come untied.  I am blessed to have found them.  Thanks for such a quality product.