New Balance WCH996 v6 - Women'sBuilt for speed, endurance, and flexibility on the court, these tennis shoes take your game to the next level now with a higher collar and tighter heel lockdown for stability. Features FuelCell foam delivers a propulsive feel to help drive you forward NDure upper technology designed for superior durability Added lockdown and stability through heel and saddle NDurance rubber outsole technology provides superior durability in high wear areas to help get