Mizuno Men's Wave Nirvana 8 Running Shoe Synthetic and mesh Rubber sole Dynamotion Fit, Gender Engineering Mizuno Wave Technology: Full length Composite Double Fan Wave provides superior protection while offering excellent support to the moderately overpronating foot. Smooth Ride - Engineering approach to minimize the rapid acceleration and deceleration of the foot during transition, creating the smoothest ride ever. AP Midsole - Lightweight, responsive, yet durable cushioning copolymer. AP+, Mizuno Intercool Mizuno Airmesh, X10, VS-1