Stable and smooth at any distance, this running shoe sits on a fusion of cushioning technologies that transforms every heel impact into propulsive energy. A robust 3D Guidance System provides adaptive stability to deliver a more balanced ride and silky-smooth transitions from footstrike to toe-off. Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step Stability: helps maintain comfortable foot alignment with targeted cushioning and support Reflective details enhance visibility in low light or at night Removable, cushioned insole allows for custom orthotics OrthoLite® X-30 footbed rebounds from every stride faster with added dryness and breathability FF BLAST PLUS™ lightweight cushioning transforms impact absorption into rebounded energy PureGEL® cushioning in the sole absorbs impact and creates a smooth heel-to-toe transition AHARPLUS® High Abrasion Rubber brings enhanced durability to high-impact areas in the tread Textile and synthetic upper and lining/rubber and synthetic sole Imported