Ground-breaking 29 compression rating for the lowest compression, softest feel of premium 2-piece golf balls Longest distance performance of all premium 2-piece golf balls when tested on a 90 mph driver swing Lowest driver spin rate of premium 2-piece golf balls for the straightest flight off the tee when tested on a 90 mph driver swing Hard ionomer blend core is 3% larger for increased ball velocity and exceptional distance Softer, thinner sodium/zinc ionomer cover offers softer feel and less spin for straighter shots with enhanced durability