Style#: FD5431-006 We made the Hyperlift plate in the heel even bigger for better stability when getting after tough workouts like split squats, dead lifts and other lower-body exercises. The lace lock system attaches to the shoe tongue, so you don’t have to worry about latching it to any fabric. It helps keep your laces in place, so once you tie up, you can focus solely on your workout. The rubber wrap is extended on the side and adds durability and support, so that you can scale any kind of rope climb with the same repeated velocity without worrying about wear and tear. Lightweight, breathable mesh helps keep your foot cool yet sports the kind of durability that can withstand scrapes, slashes and quick drag movements. Whatever your "why" is for working out, the Metcon 9 makes it all worth it, with a larger Hyperlift plate, added rubber rope wrap and updated foam. Sworn by some of the greatest athletes in the world, intended for lifters, trainers, go-getters, it’s still the gold standard that delivers day after day.