Mizuno Men's 9-Spike Erupt Baseball Cleat 100% Synthetic Synthetic sole 9-Spike Technology dramatically enhances lateral stability and traction, providing a more stable platform for the athlete's performance with three "Cleat Triads" for superior execution of the three primary baseball/softball movements Mizuno Wave Technology reduces weight while increasing durability, cushioning, and stability AP+ foot bed provides incredible shock absorption and an overall well cushioned feel