I couldn't get my foot in the cleat to even fully try it on. It was my size. I also previously had success with the same phantom cleats but those were low. So I will say that I am confused and disappointed by the sizing. With that being said, I did give them to somebody who is about 1 or 2 sizes smaller, and he loves them. I asked about the performance and feel, and he said they are comfortable, especially around the heels, and feel far superior to standard cleats, that moving forward he'd make sure to invest in designs such as the Phantom 6 high. He had mentioned his ankles feel a bit sweaty but the trade off of feeling extra stability was worth it.