Mizuno Women's Wave Inspire 8 Running Shoe 100% Synthetic and mesh Rubber sole Composite Double Fan Wave provides the perfect blend of support and cushioning in a package that transitions like no other. Ortholite sockliner for a responsive first feel. Smooth Ride - engineering approach to minimize the rapid acceleration and deceleration of the foot during transition, creating the smoothest ride possible Upper - Airmesh upper provides the utmost in breathability and comfort of the upper. AP Midsole is a lightweight, reponsive, yet durable cushioning copolymer. Weight: 8.9 oz Solid rubber forefoot outsole designed for cushioning, flexibility, and durability.