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Rugged, off road, ultra-distance running is made simpler with The North Face's Arnuva 100 TR shoes. Ergonomic design, TPU lacing cage and friction-reducing heel keep your feet comfortable while ultra-ightweight compression molded Tenacious Grip outsole holds onto the most unforgiving of trails.<ul><li>Abrasion-resistant synthetic nubuck with breathable, protective mesh uppers</li><li>Minimize friction and prevent heel slip thanks to the Sure Grip heel lining panel</li><li>Prevent pain from incorrectly striking your foot thanks to Northotic ergonomically designed footbed with Poron forefoot and heel inserts</li><li>Never encounter stinky feet again in the AgION antimicrobial footbed covering</li><li>The lightweight dual density compression molded EVA midsole is combined with X-2 polymer dampening compounds to provide high impact cushioning, support and medial posting</li><li>A rear foot compression cage provides mechanical assist to the midsole components</li><li>Tenacious Grip outsole offers excellent traction, stability and durability in a variety of conditions</li><li>TPU lacing cage to provide secure upper support</li></ul><ul><li>Weight per pair: 1 lb 10 oz</li><ul><li>Upper: Synthetic nubuck / mesh</li><ul><li>Midsole: EVA</li><ul><li>Outsole: rubber</li></ul>Specifications based on size 9.