Nike Metcon 9 New Training Shoes FD5431-015 Black Pro Green Mens Size 10 and size 7 available Brand new. For training. Whatever your "why" is for working out, the Metcon 9 makes it all worth it. We improved on the 8 with a larger Hyperlift plate and added rubber rope wrap. Sworn by some of the greatest athletes in the world, intended for lifters, cross trainers, go-getters and it’s still the gold standard that delivers day after day.