Meet the new Primus Trail Flow, a natural off-road performer. This streamlined silhouette provides both exceptional grip and responsive ground feel to move mindfully across a variety of terrains. The durable, breathable 100% recycled polyester mesh upper keeps those agile feet cool and secure with engineered, anti-slip lacing. Trail Flow All Terrain outsole Lightweight grip for fast, all-terrain adventures. NO INSOLE No insole, bringing you even closer to the ground for a greater barefoot experience. BREATHABLE MESH Breathable, lightweight and comfortable. 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 219g