NIKE Junior Tiempo Natural IV Soft Ground Football Boots synthetic-and-fabric Rubber sole Shaft measures approximately 3.1" from arch Synthetic leather upper for ball control and feel. EVA midsole with sockliner for comfortable fit. Soft-ground (SG) studs for use on wet and muddy fields requiring maximum traction. EVA Sockliner - Antimicrobial and breathable while providing superior cushioning in this football boot.