Asics - Cyberflash (Liquid Silver/Black/Asics Red) - Men's: An aero-dynamic spike that gives sprinters a custom and form fitting sprint shoe with an 8-spike configuration. Includes 8mm compression-tiered spike and wrench. Great for 100/200/400m & 100m Hurdles. Polymeric Monodensity Spike Plate provides a stiff platform for sprint efficiency. Internal Fit System gives custom forefoot fit and smooth air flow. Tiger Fit Heel customizes the heel fit and reduces unnecessary weight. Shoe weighs 6.2 oz.