During the development process of Ophena magnetic stirrups, we decided to offer the stirrup in one size only. We chose the dimensions carefully and are really happy with the results. They fit women, men and children equally. They look sleek, but offer enough space for common foot sizes (we offer the insoles from EU 32 to 46).
Traditional stirrups come in different sizes to reduce the risk of losing the stirrup (too large stirrup) or getting caught in the stirrup (too small stirrup). Ophena eliminates each of these risks with its magnetic system and open design respectively.
To be specific, this is the size of the tread (top-view):