For maximum performance in the coldest conditions

the neckline is lined with skin-soft merino wool

These boots are constructed using the finest quality Goat fur shaft and calfskin hair bottom

offering sustainability without compromising on durability

Crafted in Vietnam

Topo Athletic | MTN Racer 4 | Men's | Grey/Lime Engineered mesh For maximum performance in theMORE 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