VIVOBAREFOOT Men's Primus FG M Mesh Trail Runner, Black/Charcoal, 41 EU/(8.5-9) M US has the following specifications VivoBarefoot Primus Trail (FG) Running Shoes Primus Trail FG with Vivobarefoot's new, firm ground minimalist sole gives you grip on tough, rocky terrains. Quick draining mesh and a protective ankle collar mean better off road, cross country performance. Keep your feet barefoot with less running shoe and more sensory feedback. This vegan friendly trail shoe will deliver you with the ultimate lightweight and flexible running experience. The mesh upper will encase your foot in breathable comfort, while the padded ankle collar exists to provide a snug and supportive fit. PRO5 works as an ultra-thin, puncture resistant layer in the sole of the shoe so you can jog on jagged terrain with confidence. The Firm Ground sole is Vivo's off-road all-rounder for exploring natural terrains. It lets your feet move as nature intended on light, dry, hot trails and moderately w...