Mizuno Wave Universe 3 Running Shoe 100% Synthetic and mesh Synthetic sole SmoothRide Engineered to minimize the rapid acceleration and deceleration of the foot during transition, creating the smoothest ride possible Mizuno Wave - The leading footwear technology that combines cushioning and stability, two distinctly different elements that are both inherently necessary in great running shoes Cutting edge "printed" overlays provide just the right amount of support AP midsole functions as a lightweight, responsive, yet durable cushioning copolymer G3 outsole provides superior grip with less weight. G3-DR provides added durability in key contact points