Abrasion-resistant tight-weave mesh. External tongue scree-collar. Abrasion-resistant, synthetic support overlays. C-Delta metatarsal fit system. Ortholite Northotic footbed BOTTOM: Unleashed Performance (Neutral) engineered platform . Semi-curve lasted. Forefoot heights. X-Dome Cradle provides high-impact heel cushioning and rebound. Dual-density EVA X-Dome Cradle heel cushioning and support system. ESS Snake Plate forefoot protection. Tenacious Grip high-abrasion off-road sticky rubber.