The RX 120 offers a racing pedigree with a more inclusive high-performance fit. Lange's new Dual Core shell construction and Dual 3D liner integrate perfectly, ensuring unparalleled foot-wrapping and precision. The new innovative RBT tongue provides energtic power transmission and rebound. The new RX specific fit retains Lange's strong heel lock and foot hold with more instant "out-of-the-box" comfort.