Polara 2-Piece Ultimate Straight Golf Balls DOES NOT CONFORM TO USGA REGULATIONS The Polara 2-Piece Ultimate Straight Golf Ball features three different kinds of dimples that eliminate hooks and slices by up to 75%. But this firmer distance ball features a Surlyn cover and a high-velocity polybutadiene core that yields prodigious drives. Also like the XS it has two regions of dimples. On the poles the deeper dimples lower drag and enhance weight distribution while the small dimples provide added slice and hook correction. On the equator the shallow dimples lower lift and establish the preferred spin axis. To correct hooks and slices simply point the side stamp arrow at your target. (When the arrow doesn't point at your target it'll react like a regular ball.) To boost distance with your driver tee the ball up high and use a driver with a loft of 10.5 degrees or more. To bust your irons point the arrow toward your target. Polara says you'll gain up to 20 yards. For extra bite on the greens align the arrow so that it's perpendicular to your target.