The Magic Speed shoe is designed for racing or regular training runs. It offers the versatility you need to help your body and mind achieve a new personal best. The Guidesole technology is combined with a carbon forefoot plate to propel your foot forward, creating a smooth rolling sensation with every step. Typically, adding more foam to a shoe makes it heavier. However, the midsole's drop with Flytefoam Blast cushioning provides a responsive feel with each step while keeping the shoe lightweight.