Mizuno Lady Wave Ultima 2 Running Shoes AP Midsole - a lightweight and responsive cushioning material which also provides great du VS-1 - absorbs shock and enhances cushioning properties by resisting compression - set, th AIRmesh - allows each running shoe from Mizuno to maintain a high standard of breathabilit X-10 - provides the most durable carbonrubber from Mizuno that alllows for longer wear in Mizuno Wave - provides excellent cushioning by dispersing the force of impact across a lar