The Primus Trail II Firm Ground is our original, best-selling trail-running sneaker. It&&';;s light, durable and flexible for wide-ranging trail adventures that bring you closer to the earth. Continuously improved through athlete testing and material innovation, the Primus Trail II FG has nothing more or less than exactly what you need - made with high-performance, recycled, vegan* materials. FIRM GROUND OUTSOLE Stand firm on multiple terrains. ORTHOLITE INSOLE The Active Ortholite Performance Insole is made of 98% recycled PU foam, which helps reduce waste and the use of virgin plastics. BREATHABLE MESH Breathable, lightweight and comfortable. TOUGH RUBBER COMPOUND Strong, non-marking rubber compound for sticky grip and high-abrasion when you need it most. VEGAN* *The main materials in all our Vegan* products are synthetic and aren&&';;t derived from animals. We don&&';;t (yet) have the transparency we need over the production of all the small components (such as adhesives and dyes) used in these products to ensure they meet vegan best practices. So, whilst we believe the shoes are vegan, we&&';;re not yet able to guarantee it and want to be fully transparent. WEIGHT Based on a single shoe in Men&';s size: EU 42 | UK 8 | US 9 315g