Express yourself with this head-turning trainer that truly allows you to express yourself. Air mesh and synthetic material mix upper. Alternative closure system. A fitFOAM midsole, made of a visco-elastic rebound foam, contours to your foot like a custom mold. Encapsulated midsole construction for enhanced fit and support. Unique heel construction with second-density cushion in a women's-specific design. Non-marking rubber outsole. Flex grooves for optimum forefoot flexibility. 8. 00 oz. Product measurements were taken using size 6. Please note that measurements may vary by size.