PowerStroke™
    www.macrogolf.com/PowerStroke.php

PowerStroke™ is the most ergonomic USGA conforming full-swing golf grip ever introduced for play. Designed by Macro Golf to rest comfortably yet firmly in the fingers, PowerStroke is proven to lengthen distance and improve consistency by providing more responsive swing hand control and measurably greater tension-free wrist flex from set-up/address through impact/release.