Primus II FG Running Shoe – Men's

For trail runners chasing true ground feel on technical singletrack, the Primus Trail II FG is our go-to minimalist shoe for athletes ready to run the way their feet were built. A puncture-resistant sole with firm-ground lugs delivers real terrain feedback without killing proprioception, while the wide toe box and zero-drop platform let your foot splay and work naturally mile after mile.

• Ultra-thin firm-ground outsole with puncture-resistant layer gives you honest terrain feedback on rooted and rocky trails without the stack height that dulls ground feel
• Firm-ground lugs bite into forest singletrack and mixed surfaces, keeping traction where you need it on technical Southern trail systems
• Wide toe box lets your forefoot splay naturally — no compression, no hotspots on longer efforts or back-to-back days
• Zero-drop platform promotes natural foot mechanics and builds real foot strength over time — especially valuable for runners transitioning away from heavy cushion
• Available in Obsidian — US 7 through US 15 (EU 49) — one of the widest size runs you'll find in a true minimalist trail shoe