Ortix is what gives KARHU “ﬁt” which is based on data driven insights. Ortix refers to the shape of the midsole, volumes of the upper and overall measurements of the last.
The KARHU Fulcrum technology is designed to keep all forces going forward, reducing braking forces and using your body's natural energy to create a smoother ride. It's what we call the Rolling Effect. Fulcrum Technology provides: Balanced Cushioning, Increased Support, More Energy.