The TOUR B with REACTIV X system is the Smarter Tour Ball. The proprietary REACTIV X system combines the REACTIV iQ Smart Cover Technology with XCLRNT mid-layer for increased distance off the tee and improved feel and control around the green. The TOUR B XS is ideal for players with swing speeds OVER 105 MPH who want additional spin. MindSet is a visual cue on the golf ball that reminds you of the easy three step process: identify your target, visualize the shot path, and focus on the dot.