The Mizuno MX-100 irons are essentially a larger version of the MX-200 irons. The heads are not only a bit longer, but they also have a wider sole and a larger and deeper cavity behind the head. All this is aimed at the higher handicapper who needsa little extra help with their irons and we are pleased to say they work. The large cavity is visible at address on some of the longer irons, which can be a little off-putting, but the forgiveness of the MX-100 heads soon has you forgetting about this. Even on off-centre hits these Mizuno irons were forgiving with no loss of distance. However if you struggle with your long irons then you may want to drop the 4-iron for the excellent MX-Fli-Hi utility instead. Unusually for a set of irons these days, the MX-100 irons come with a sand iron included and unusually for inclusive sand-irons it is actually pretty good. The wide sole will get you out of the heaviest sand or rough and the feel was pretty good too. The MX-100 irons are cast rather than the forged MX-200 irons an although they don't feel quite as nice, they still give plenty of feel, even if they do seem a little heavier from that bigger cavity. Overall a good set of irons for the high handicapper who wants to improve.