Asics - Cyber MD (Spike Blue/Liquid Silver) - Women's: Cyber(tm) MD is an elite racing spike for middle distance events from 400m to 1,500m, including hurdles. SharkDuo(tm) heel outsole provides traction for hurdling. SpEVA(R) midsole material bounces back to assist during propulsion phase. Removable spikes allows the athlete to replace worn elements. Open mesh upper provides superior ventilation and comfort. Shoe weighs 6.5 oz (with pins).