Double-stacked foam creates our most cushioned stability shoe yet. Take supportive cushioning to the next level in the Structure Plus. We stacked responsive ZoomX foam on top of ReactX foam for a smooth, yet secure ride. Plus, our midfoot support system provides a stable transition from heel to toe. Dialed-Up Cushioning We combined premium ZoomX foam with sturdy ReactX foam to give you an ultra-comfortable, ultra-responsive feel. Trusted Stability Our midfoot support system helps stabilize your foot and securely guide it through heel-to-toe transitions. Dual-Rubber Outsole Soft rubber in the forefoot gives you flexibility while stiff, high-abrasion rubber in the heel offers enhanced durability. Secure Mesh Upper Engineered mesh upper with a secure midfoot band gives you a contained feeling with optimal breathability.