Wore them to lift once, too small for my foot. Men's NIKE® METCON 8 AMP :: Meet your powerful side when lacing up your updated Men's Nike Metcon 8 AMP cross trainers. Dominating your toughest workouts will be a breeze, literally, with weightless mesh that surrounds the top of your foot and lets more airflow in than before while keeping you protected. Grippier rubber gives your arch the tenacious hold it needs as you scale ropes and a wide, flat heel flexes with your movements. Whether you're training inside or lift open the garage doors to run the streets, each sprint, kettlebell swing, and sled push will feel responsive and comfortable in the Metcon 8 AMP. Perfect For: Cross train in the gym or outdoors with features that make it possible to do it all. Breathable Upper: Lightweight mesh with textured overlays in high-wear areas allow for ventilation. Secure Fit: Lock down your laces with secure tab locks. Minimize Drag: Handstand clip at the heel minimizes drag while using the wall for your workout. More Stability: The wide, flat heel gets even more stable with an inner plate to balance your foot. Responsive Cushioning: Nike React foam is as comfortable as it gets without sacrificing stabilizing features. Enhanced Rope Climbing: Grippy rubber wraps around your arch during intense rope climbs.