NIKE Kids JR Tiempo Rio Soccer Cleat Black/Wolf Grey/Dynamic Blue/White Synthetic leather upper. EVA sockliner midsole. Injected rubber combining conical forefoot studs and bladed studs on the heel. For use on natural and artifical surfaces. This is a perfect entry level Soccer boot for your kid, durable and comfortable, you can't go wrong with the Nike JR Tiempo Rio FG -R.