Engineered for lightweight stability and comfort, our proprietary KINERTIA cushioning system enhances our base KINERTIA compression molded EVA foam by infusing it with performance properties that provides a ride that is both efficient and stable. The O FIT Insole features triple-density EVA foam for all-day comfort and support. Vibram MEGAGRIP rubber is a technical compound that offers excellent grip on both wet and dry surfaces while maintaining a higher level of durability, providing the wearer incomparable performance and confidence on extremely demanding terrain.