The Zone XT 'Black' complements the high-performance training shoe with a no-nonsense color scheme. A black mesh upper receives lightweight support through the addition of no-sew overlays, accented with a PUMA formstrip outlined in white on the lateral quarter panel. An external heel clip provides stability to a midsole that uses a blend of IGNITE foam and NRGY beads, resulting in a hybrid system that delivers superior cushioning and energy return.