The Ping G15 Irons replace the hugely popular, market leading G10 irons and introduce a number of improvements that make them even more attractive than their best selling predecessors. The biggest improvement is that the g15 irons are a bit more forgiving thanks to the moment of inertia increasing which Ping has achieved by introducing a custom tuning port that is further back from the face of the clubhead. This has allowed Ping's designers to remove seven grams from the G15's face custom tuning port structure without destabilizing the clubface or reducing distance control. The ping irons g15's design created more perimeter weighting than previous G lines. The weight comes from a thinner more explosive face. The 7grams of weight taken from the face are put out on the toe and a Custom Tuning Port (which might just seem like a medallion is much more than that) behind the sweetspot. The look is a little bit much with such a busy cavity, but the new colors are great. Black and Red really look nice on the brushed dark stainless head. When first holding the clubs though, discount golf clubs they definitely feel a bit heavier than most other Ping irons. However it really only takes a few practice swings to get used to the weight, and get a feel for the clubs.