A favorite among fans for race days as well as daily training, the Topo Athletic MTN Racer 4 offers robust performance on technical trails. Its platform of 33 x 28 mm provides good cushioning underfoot and a protective barrier between you and the ground. The new upper has been optimized to provide effective support on technical terrain. The MTN Racer 4 now features our FKT insole, which allows for faster water drainage and better energy return, while our improved gaiter attachment system effectively prevents dirt from entering. The Vibram Megagrip outsole ensures excellent traction and great durability, delivering reliable performance even when the trails become challenging.