Self Correcting Polara Golf Balls - Thanks to its unique dimple design, the Polara golf ball has been proven by robotic tests to drastically reduce those dreaded slices and hooks by up to 75 percent. Polaras were even featured in the New York Times (see below)! Unfortunately, this ball does not conform to USGA rules. However, it is perfectly legal for recreational play. This may contain a mixture of different year models.