Enhanced Functionality, Performance and Safety:- The Tech 10's comfort is legendary and a key feature in making the boot a pleasure to wear in all conditions. A key objective was maintaining the bootâ€s feel while enhancing its performance, functionality and safety. The most significant upgrades to the Tech 10 performance are unique technologies: the Frontal Flexion Control Frame, the Asymmetrical Dual-pivot Arms, the patented Dynamic Heel Compression Protection Shock Absorber which is integrated into a redesigned foot shell and the slimmer, more streamlined, outsole.