Upper: 1200 denier nylon + synthetic mesh

They provide your feet with plenty of room for natural movement while also protecting your feet from the hard impacts of each step

Grapefruit Seed Extract

you get plenty of room to help your toes move more freely

making it the ideal choice for everything from river rafting to world travels

Vivobarefoot Women's Primus Flow - Dark Shadow Size:39 Upper: 1200 denier nylon +The Primus Flow is the newest member of the Primus family, designed for pinnacle barefoot running performance. Built for efficient and unrestricted natural movement, this ultra lightweight runner our lightest ever weighs in at just 150g. Its lightweight, breathable upper made from engineered recycled mesh forgoes overlays in favour of a stripped back, seamless construction. PRIMUS FLOW OUTSOLE Reconnect and run slow NO INSOLE No insole, bringing you