ONE STEP CLOSER TO CIRCULARITY

Lightweight trail runner engineered for off-road performance and sustainability. The Primus Trail 3.5 FG features a firm ground outsole for secure footing across varied terrain, breathable mesh construction, and an Active Ortholite insole made from 98% recycled PU foam. At just 281g per shoe, it delivers the minimal, connected feel Vivobarefoot is known for while reducing environmental impact. Rewild your run.

Trail runner built for off-road exploration with minimal environmental impact. The Primus Trail 3.5 FG combines lightweight flexibility with rugged durability across rocky terrain. Constructed from recycled, vegan materials—76% recycled polyester in the upper—it represents a significant step toward fully circular footwear. Natural fit, responsive ground feel, and mechanically recyclable design make this an expert choice for runners committed to both performance and sustainability.