Design: Lightweight mono-mesh upper Offers neutral support for versatile wear Anti-slip laces for locked-in closure Weight: 7.9 oz/224 g Offset: 8 mm (35.5 mm/27.5 mm) In-shoe Comfort: SPEEDROLL(TM) Technology for seamless forward propulsion Responsive nylon plate running the full-length of shoe for everyday speed workouts Ultralight PWRRUN PB(TM) for optimal spring and energy return FORMFIT(TM) foot-wrapping 3D comfort for personalized fit Durability & Traction: XT-900 outsole for reinforcement on high abrasion zones for maximum grip and strength Additional Details: Crafted in part with recycled materials for lighter footprint