The MD500B9 is built for emerging track athletes seeking speed and comfort in one streamlined design. A lightweight synthetic and mesh upper pairs with an updated collar construction to deliver plush comfort without slowing you down. Inspired by a performance-driven spike plate design, the 6-pin configuration is engineered to handle a wide range of distances and disciplines on the track. Finished with a bold, asymmetrical look, this spike is made to stand out as you power around the oval.