The new designed Mizuno MX-300 Irons are a full cavity back iron for players seeking assistance from their golf iron. This light let I bought it without hesitation.Now, I use it, the feeling is very good.

On the one hand,the MX-300 Irons are made from the Grain Flow Forged, 1025E "Pure Select" mild carbon steel, which plays a big part in that feel that Mizuno fans adore. In conjunction with the Grain Flow Forging process, Modal Analysis was used to further perfect that sweet, buttery soft feel and sound at impact. To give you a better idea of the concept behind the MX-300, think "a more forgiving MP iron." Yes, the workability and sleek appearance is still there, but so is a larger sweet spot, and a nearly invisible cavity.

On the other hand,the Y-tune embeded on the Mizuno MX-300. Looking at the cavity, the Y-Tune Pro is immediately identifiable by the "Y" shaped relief, as well as the "Y-Tune Pro" badging on the top hosel side of the cavity. Opposite that badge, on the top toe side of the cavity is the MX-300 badge. Longtime Mizuno fans will immediately notice a deviation to Mizuno's traditional use of blue and yellow in favor of a more subtle grey and black combination in the badging. Though I never had a problem with the blue and yellow combination, I found the updated color combo to be very sharp and sleek.

The best thing about the Mizuno MX 300 irons is the FEEL. I didn’t think you can get feel like this in a GI cavity back. Hitting the sweet spot feels so good, almost drug-like. Very close to a pured blade which is a sensation I don’t get to feel very often. However, I think you could like Mizuno MP-68 and Mizuno MP 53.They are good,too.