Srixon Z StarXV Sleeve

We added SeRM (Slide Ring Material). This extremely resilient urethane cover uses Moveable Polymer Cross-Linking to greatly enhance spin. With molecular bonds that stretch but don’t break.
SeRM gives you a softer cover that actually digs into your club grooves at impact. That extra bite means more friction, which leads to dramatically more spin, and ultimately, unmatched stopping power around the green.