PROGRIP 798BKGY Black/Gray Dual Density MX Grip Dual flange against the side of the hand adds comfort to a revolutionary design Thermo-molded gel system in the palm area conforms to the hand when pressure is applied Reduced vibration gel system (RVGS) reduces vibration by over 47 percent Firm 45; include 10 durometer soft gel system in palm area Measures 22-25mm inside diameter by 115mm length