A new addition to Saucony's trail collection, the KOA ST is a strong, ultra-rugged trail runner packed with impressive technology for your next trail run. Runners will love the secure fit of the protective upper, wrapping the foot in durable, breathable mesh. PWRTRAC outsole technology includes more aggressive 8mm lugs for soft, muddy and uneven terrain where extra grip is needed. EVERUN topsole provides long-lasting responsive cushioning for an enjoyable ride. The toggle lacing system provides quick and easy adjustment of the fit around the foot for superior stability. Upper: Oblique toe box provides maximum toe splay for improved stability. Durable mesh gives added protection. Midsole: EVERUN Topsole construction provides a lively, resilient ride while offering continuous cushioning and enhanced energy return properties. Outsole: Lower profile PWRTRAC outsole is engineered to adapt to various terrain types for excellent traction and durability.