A “stability frame” design strengthens the toe and topline while optimizing perimeter weighting for improved performance on mis-hits while a more neutral CG location that’s closer to the center of the face improves performance on center strikes.
The Mini Driver which TaylorMade offered in SLDR and AeroBurner models was a very cool product. It nicely bridged the gap between a driver and fairway wood. For a lot of players that was a perfect fit as the added loft and shorter shaft of the Mini gave them exactly what they needed.
Other features of the new Hot Metal include the aforementioned “stability frame” design for higher MOI and improved launch as well as Mizuno’s new Pearl Brush non-glare finish.