The expert-level Scorpion SF 130 has the mindset of a close-fitting race boot, thanks to the 98 mm last, the overlap design and the solid lug sole. Contour 4 Fit system, which uses interchangeable tongues and footboards along with a moldable High Density ID Thermo Pro Custom Fit Liner, customizes fit and makes problem areas more comfortable thanks to pre-punched areas.