adidas Arriba 4 - Women's The adidas Arriba 4 track spike provides the ultimate in responsiveness and propulsion at a reasonable price. Air mesh upper provides maximum ventilation. Synthetic overlays hold the foot securely during all phases of the running gait. Soft collar around the ankle helps reduce pressure on the ankle and Achilles tendon. SPRINTWEB forefoot locks the foot down during the event-specific motion. Pebax® six-spike plate delivers speed and durability. Ideal for 800m to 3,000m events. Includes 8mm pyramid spikes and a wrench. Wt. 5.2 oz.