Three ultra-strong, lightweight mesh fabrics provide breathable support and flexibility. External TPU anatomical heel counter for fit, control and torsional rigidity at heel strike. Cushioning foam for better shock absorption in the high-impact heel zone. CRTek carbon rubber crash pad in high-abrasion heel area for durability. Piston Tech 4-prong lugs for a smooth, cushioned ride and quick response. CRTek rubber in high-wear forefoot areas for lightweight durability. FoamFusion technology integrates multiple foam types for seamless transitions