Be one of only 4,000 athletes racing in Hoka One One Rocket MD Spike running shoes. Only 4,000 of these high-performance track spikes have been produced, designed to help you dig in and accelerate on left turns and through the finish line. Top US 5000 meter runner Nicole Tully blazes around the track wearing these spikes.Upper: Mesh offers breathable flexibility. Synthetic overlays provide lightweight support. Flat laces reduce irritation.Midsole: Scaevus Symmetry is designed for optimal performance on left turns.Outsole: Asymmetrical spike placement helps track athletes dig in around corners.