We made the Hyperlift plate in the heel even bigger for stability when getting after tough workouts like split squats, dead lifts and other lower-body exercises The plate helps force weight down and out while adding rigidity in the heel That firmness helps you feel grounded and supported, specifically under heavier loads. The lace lock system attaches to the shoe tongue, so you don’t have to worry about latching it to any fabric 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 and go-getters, it’s still the gold standard that delivers day after day. Hits of metallic and a multicolored glow give this design a unique look.