Captures the inside

a lightweight and breathable perforated mesh fabric that resists clinging and sagging

Crafted in Vietnam

the neckline is lined with skin-soft merino wool

Insulates when wet - keeping your feet warm in wet

Topo Athletic | MTN Racer 4 | Men's | Grey/Lime Engineered mesh Captures the insideMORE COLORS The Topo Athletic MTN Racer 4 is your go to trail running shoe for high performance across any terrain. While the name may hint at race day speed, this versatile trail shoe goes well beyond racing. Designed for everything from daily miles to long runs and technical descents, the MTN Racer 4 delivers unmatched performance, agility, and comfort in rugged environments. At the core of this trail powerhouse is Topo's ZipFoam midsole, which