First of all, this article can help you a all-round understanding with the Ping G15 Irons, or give you a piece of humble advice before you buying the G15 Irons from any Discount Golf Clubs store. Also, the G15 Irons are put in the category of Game-Improvement Irons and are turned to perform well in this category.

Depending on the target audience depends on how those factors are balanced out.  Typically when you go down the "game-improvement" iron road, it means big offset, wide soles, draw biased irons. So that the G15'sdesign 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.

What is the exact function of the Custom Tuning Port? It can provide solid backing for the thin clubface to ensure consistent distance control and a solid feel. In this case, the Ping G15 irons has been saved 7grams in the CTP design, weight that went to perimeter weighting for increasing the MOI. A thinner clubface (by 5 grams) is said to increase ball speed (1-2 mph faster equals 3-6 yards longer carry than the G10 iron). Strong lofts take full advantage of these high-launch characteristics for max carry.

In addition, The technology of the G15 provides the high-launching, maximum-forgiveness benefits that make for more consistent iron play. The stainless-steel-cavity design features a new Custom Tuning Port that expands the perimeter weighting and increases the moment of inertia. Weight savings from a thinner face are moved to the toe for added forgiveness, while the wider sole produces a higher launch angle. The whole face was hot and the sweet spot was huge.  The generous off-set helped square up the face at impact for the average golfer, but Ping balanced that off-set with that huge weight in the toe.