Softer foam core cushions your foot, while a firmer outer layer is durable and stable Rubber sole Super-tough yet breathable chain-link mesh cools and flexes as you speed through agility drills Huarache-inspired strap and rubber-striped sidewall that envelops your heel to brace you for movement in any direction Nike Free technology in the forefoot creates flexibility for agility moves and sprints Stretch around the ankle lets your foot move naturally as you burst, cut and brake Rubberized logo at the tongue nods to the Huarache of the early '90s Rubber tread in high-wear areas gives you durable traction Flat, wide heel creates a solid base for lifting