Thank you for viewing. This is a heel pad for Shimano S-PHYRE RC900/901. The size is M (40-44). This is not a genuine Shimano part, but a compatible product. I purchased this new, but it was the wrong model and I couldn't use it, so I am selling it. I have not used it at all. Although it is new, it is still a used item, so please refrain from purchasing if you are sensitive to this.