Game. Changer.
As a tall guy (6'4) with limited ankle mobility, squatting has always been a challenge. I always ended up really bent over squatting, resulting in a posterior chain-dominant squat and llts of "squat-morning" when it got heavy. After 4 squat sessions with these, I can say these have finally helped my squat form "click." Been able to stay more upright and get more quad involvement in my squat.
I wish I had pulled the trigger on these when I first came across them over a year ago.