Nike Training's 'Metcon' collection provides optimum support and traction during rigorous workouts., Designed for a sock-like fit, this 'Free 3' version is made from breathable mesh that's coated for durability in high-wear areas, 'Free' technology at the forefeet creates flexibility for sprints and agility exercises, Structured side walls add stability during lateral movements, Flat, wide heels keep you grounded when lifting, Foam cores provide cushioning and absorb shock, while rubber soles deliver on grip, Pull tabs at the tongues and heels make for easy on and off