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The isoSeek IV is a dirt-loving animal built for your next trail adventure. A stable trail shoe that's at home on gnarly trails, the isoSeek IV features excellent forefoot cushioning with a 1:1 Energy Cell, and smooth, graduated guidance with the 1:1 Guidance System. 1:1 Seamless Upper creates an unparalleled fit with a seam-free interior. 1:1 360° Lacing anatomically conforms to the foot for a tailored fit regardless of foot shape. 1:1 Graduated Guidance System guides the foot from heel strike to toe-off for a smooth, consistent feel. 1:1 Energy Cell cushions the forefoot upon impact and then returns energy back to the runner as it compresses and rebounds on contact. SKYDEX® heel crash pad. Full carbon rubber outsole for excellent off-road traction and mud shedding. Forefoot Flex Grooves for a smooth, efficient ride. NEW Ortholite ® sockliner for amazing step-in comfort and long-lasting cushioning. Heel/Toe offset: 22.0mm/12.0mm.

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