The Nike Free Metcon 4 combines flexibility and stability to help you get the most out of your training program. The revamped mesh "mesh effect" offers maximum coolness and flexibility for acceleration during your agility workouts, while the midfoot and heel support wraps your foot during the hardest workouts in the weight room. The 4 brings back theoriginal's breathable, high-strength mesh. The upper features Huarache-inspired webbing and a striped rubber side wrap that wraps around the heel to anchor your movement to the ground, no matter the direction. Nike Free technology in the forefoot provides optimal flexibility during agility drills and sprints. Stretchy around the ankle, the shoe allows the foot to move naturally as you accelerate, change direction and slow down. The wide heel creates a solid base when lifting weights. The softer foam core cushions your foot, while the firmer outer layer provides durability and stability. The wide inner lacing system distributes pressure around the midfoot for a comfortable, supportive feel during quick stops and quick changes of direction. The rubber logo on the tongue pays homage to the Huarache of the early 90s. Rubber outsole in wear areas for lasting traction.