Knit? Neat! The Mesa's upper features a knit material designed for optimal flexibility and air flow, granting you breathability and reduced foot funk. Product Details The Mesa is the natural next step in our Mountain-to-Town collection. How natural? Well, considering this shoe feels more like a sock than most of the mis-matched socks in your drawer, pretty natural. Its lightweight materials and ultra flexible fit make it the perfect hybrid yoga-hiking-gym-airport shoe. Its 100% vegan materials make it easy to love. Its dynamic fit makes it easy to wear. Its knit mesh makes it easy to avoid foot-funk through quick-dry. Its owner (you) makes it look really good. Minimal drop (almost zero drop. 4mm) Upper: Sock-like, stretchy knit construction with TPU frame overlay Midsole: EVA Mountain-to-Town Outsole: Full solid rubber specifically engineered for both trail and pavement Insole: Poly Insole Stack Height: 16-20mm (Men) Drop: 4mm Weight: 9.8oz (Men) Additional Info: Vegan friendly Tagging Vivo barefoot for exposure; the pair you are buying is LEMS brand!