The Vivobarefoot Primus Trail II FG (Mens) – Obsidian is our original, best-selling barefoot trail-running shoe, designed to keep you light, agile, and connected to the ground. Built for durability and flexibility, it’s ideal for a wide variety of trail adventures, from rocky paths to forest tracks.

Refined through athlete testing and material innovation, the Primus Trail II FG delivers only what you need—crafted from high-performance, recycled, vegan* materials. With a Firm Ground outsole for multi-terrain grip, breathable mesh for comfort, and a tough rubber compound for long-lasting performance, it’s built for freedom and exploration.

Features:

• Firm Ground outsole – offers grip and stability on varied terrains

• Ortholite Performance Insole – made from 98% recycled polyurethane foam to reduce waste and virgin plastic use

• Breathable mesh upper – lightweight, ventilated, and comfortable

• Tough, non-marking rubber compound for sticky grip and abrasion resistance

• Flexible, durable construction for natural movement on the trail

• Vegan-friendly – made from synthetic materials not derived from animals*

*While the main materials are vegan, some small components (like adhesives and dyes) may not yet meet full vegan certification standards.