Smart-Core's unique core composition of titanium and urethane polybutadiene produces a totally unexpected result...Reactive Technology. The Smart-Core's formula, powered by Goodyear, reacts differently depending on how you strike the ball.

When a hard force is applied (driver, fairway woods), Smart-Core reacts with a firm response for longer distance. When a soft force is applied (short irons, putting, chipping) Smart-Core reacts with a soft response for exceptional feel.