Mizuno Lady Crusader 7 Running Shoes VS1 Heel Cushioning - Absorbs shock and enhances cushioning properties by resisting compression - set, thus extending the cushioning life of running shoes. X-10 - Provides the most durable carbon rubber from Mizuno that allows for longer wear in high impact areas and provides more traction at heel strike. Air Mesh Upper - Giving your feet maximum breathability and helps to reduce overall weight Carbon Rubber - A durable rubber that allows for longer wear in high impact areas and supplements traction at heel strike Weight: 255g