The Topo Athletic MTN Racer 2 takes on technical trails, in a lightweight, nimble, and rugged package. The second edition features a new mesh upper with increased breathability. Topo added an external TPU heel counter to keep the foot locked in over the platform for a stable ride. The updated 3-piece midsole offers light guidance and now features ZipFoam™ for additional response underfoot. The durable Vibram® Megagrip outsole delivers the ultimate grip on any surface, wet or dry.