From Nike, the DF Ballistec Advantage women's tennis shoes feature:

• molded synthetic tip, breathable mesh quarter and Hyperfuse construction create an extremely lightweight and comfortable upper
• built for the tennis player looking for great durability in a lightweight, responsive package
• lace-up closure for an adjustable yet secure fit
• mix of softer, more resilient foam in the forefoot with a slightly harder, stable foam in the heel to create a ride focused on the needs of tennis
• zonal herringbone outsole puts traction where you need it most