The Mizuno Watley 9-Spike RP fastpitch shoe is designed to the demanding specifications of gold medalist and lead off hitter of Team USA, Natasha Watley. Synthetic upper with air mesh tongue. VS-1™ absorbs shock and enhances cushioning by resisting compression set, extending the cushioning life of the shoe. Wave® technology combines cushioning and stability. TPU outer plate. 9-Spike™ technology provides unsurpassed traction, first step quickness, lateral support and heel stability. Wt. 10.0 oz.