Smart Sole 4 delivers an enhanced three-tiered sole, which makes it easy to get up and down from any lie, especially on bunker shots. With improved Feel Balancing Technology, new aggressive milled grooves and the addition of the G model, Smart Sole 4 provides added versatility and makes the short game easier. An extra wide three-tiered sole, with added leading edge bounce, provides maximum forgiveness from the fairway, rough or out of the bunker. The redistribution of weight from the hosel allows the center of gravity to be moved closer to the center of the clubface for better feel and more consistency on all shots. New aggressive milled grooves generate better spin performace from any conditions.