This item's sizing: W7 = EU 38 || W8 = EU 39 || W9 = EU 40 || W10 = EU 41 [ Please check photos for additional measurements from this brand ] Say an on-the-go hello to the new Primus Trail Flow Mid: the dynamic barefoot boot for the fast hiker in you. Our most lightweight trail profile yet is built for fast, natural trail movement – without compromising grip or feeling. TRAIL FLOW AT OUTSOLE Lightweight grip for fast, all-terrain adventures. NO INSOLE No insole, bringing you even closer to the ground for a greater barefoot experience. 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. WATER RESISTANT Made from materials that are water resistant and materials that are non-absorbent.