Very very good. Recommended by a doctor, who is also an athlete and not just a scientist, as he had tried it. It is necessary for a grade II sprain in both the right and left foot. The elastic ones and those sold in stores are a joke. I have bought countless ones, only with this one you feel secure and it actually immobilizes the foot and allows you to participate in daily activities and even sports without any problem. Obviously, this is due to the metal blades it contains inside, at first it needs a little breaking in to fit the foot, but then everything is fine.