Nike DF Ballistec Advantage - Women's Built for the tennis player who needs great durability in a lightweight, responsive shoe. Lightweight, comfortable mesh and synthetic Hyperfuse upper for zero distractions. Softer, more resilient forefoot foam with slightly harder, more stable heel foam for tennis-specific cushioning and support. Zonal herringbone outsole puts traction where you need it most, while saving weight at the same time. Wt. 9.0 oz.