How Mizuno Name their Suits It is always exciting when new tech suits release. Especially when it is from Japanese powerhouse Mizuno. You only have to watch a couple of my YT videos to see I am obsessed with these suits. This has been the case since I started TheSwimsuitGuy in 2018. Back then their flagship range was GX Sonic III. Since then we have had the IVs, Vs, VIs and now instead of the VIIs we have Royal . Now from the second generation of GX Sonic in 2014 all the way