The new Saucony Zealot ISO 3 provides runners with a speedy, cushioned, neutral running shoe for energized results on even the longest distances. EVERUN topsole insertion offers that responsive return that runners want for the duration of their run. Updates to the TRI-FLEX outsole provides a premium fusion of stability and resilience. Upper: Engineered mesh upper with ISOFIT creates a dynamic fit and adapts to the shape and motion of the runners foot. Lightweight and seam-free FLEXFILM provides great comfort and allows toes to splay. Reflective synthetic at collar enhances visibility. RUNDRY lining to wick away moisture. Midsole: EVERUN Topsole for lasting cushioning and consistent, lively energy return throughout the run. SRC Landing Zone through midfoot offers better transition. Outsole: TRI-FLEX Outsole Design to enhance ground contact and better flexibility at toe-off. iBR+ provides a soft yet responsive ride at a 33% lighter weight than standard blown rubber. XT-900 carbon rubber offers exceptional traction and high-wear properties.