The S/Race classic boot is one of our more popular boot options that we sell. With a precise race fit that isn't too snug but doesn't have much slop to it either our customers have found it to be a perfect mix of comfort and performance. The lightweight carbon chassis offers a perfect amount of flex in the sole and stability around corners and downhills. This model generally fits true to size. The Prolink sole will work with any Prolink or NNN binding.