Vivobarefoot Primus Trail FG 3.5 is a minimalist mesh trainer designed for natural ground-feel and agile trail performance. The shoe pairs a breathable upper with a thin, flexible sole for confident movement across varied terrain. Key attributes: Black | Mesh | Breathable | Lightweight | Flexible sole for ground-feel | High-traction firm-ground outsole | Secure lace closure | Padded, ergonomic heel collar | Branded cushioned insole with honeycomb pattern | Moisture-managing mesh lining | Low-profile silhouette | Hexagonal tread pattern | Dark synthetic overlays | Red accent elements on outsole | Composition & care: Upper: polyester mesh | Overlays: synthetic (TPU or similar) | Outsole: rubber | Insole: PU foam (Ortholite) | Wipe clean with a damp cloth. Remove insoles before cleaning and air dry. Do not machine wash.