Arc。Propulsive trail running shoe designed for speed and reduced fatigue. Built for confident speed, this shoe is for trail runners looking to move fast and maximize efficiency. The rockered shape of the midsole propels you from foot strike to toe-off, while an ultra-responsive supercritical foam compound maximizes energy return and reduces fatigue—helping you stay in PR mode all day long. A carbon-fibre plate adds extra stability so you can let it rip on uneven terrain with confidence, and outsole lugs provide solid trail traction and kick off excess dirt. Responsive for efficiency and reduced fatigue Propulsive yet stable Comfortable for long efforts Integrated flat-knit tongue construction optimizes foot containment and improves airflow for breathability on hard efforts Superlight engineered woven upper for reduced weight and improved breathability Rockered midsole with responsive new supercritical foam compound maximizes propulsion and energy return Carbon-fibre plate in the midsole adds stability on trail terrain Flat-knit collar deflects debris from entry and improves fit Supercritical foam compound improves underfoot protection and reduces fatigue Footwear geometry Stepped 4.5mm/3.5mm lugs provide optimized traction on trails plus improved dirt shedding Drop (Stack): 6mm (31.5mm : 25.5mm) Footwear outsole construction Vibram® Megagrip outsole with LITEBASE technology delivers durable, surefooted performance across a range of conditions while shedding every gram possible