UA ClutchFitTM technology wraps your ankle with a lightweight "second skin" for powerful support & incredible feel Synthetic leather & textile upper with welded, abrasion-resistant film around the perimeter of the foot Full-length Micro G® foam turns cushioned landings into explosive takeoffs Lightweight TPU shank for mid-foot support & the right amount of rigidity Molded Ortholite® sockliner is designed with a memory foam top & PU base