Nike Free Metcon 6 Size: 10 Color: Platinum White *good used condition - brown spot on one shoe. See pictures. I believe a little bit of bleach will remove though. Otherwise, great condition. ABOUT: The Free Metcon 6 opens your world of workout possibilities. Nike added even more forefoot flexibility to its most adaptable trainer + reinforced the heel with extra foam. That means more freedom for dynamic movements during plyos + cardio classes, plus the stable base you need for weights.