For preventing injury from impact
I bought this hoping it was like an ankle brace i had many years ago to help me recover from an ankle injury. This didn't do what I wanted it to do and took forever to put on and take off because of the many eyelets for the super long lace to go through. This is meant to help from impact on your ankle bones, but for my alternate purpose it did not work for me.
although my review is for an alternate purpose that did not work for me, my star rating is for the actual product fit and usability. I gave it 3 stars because it was time consuming to put on and take off, had an uncomfortable pressure point on the bottom of my foot, and it felt like the heel area could have been bigger, but as far as protecting your ankle bones from something hitting them and hurting you, I think these would do the trick!