It looks like Snell MTB Red. As much as I am excited about Mizuno's new balls, I am not excited about the shine. For me, it looks cheap.
For the price point as $43/dozen, I am not sure I would pay for the full price. IMO, Mizuno should do something Srixon has done for year; giving away at cost for the intro period like a sleeve for $10.
Lastly, I wonder who makes the balls for Mizuno.
More thorough review
Tested the RBx version. FOR ME.... it was the worst performing ball of all the 2019 balls I tested. Will be making post soon.