Shop Blue Mens Primus Trail Knit Firm Ground Running Shoes 。Brand new Mens vivobarefoot shoes Primus Trail Flow mens in Glacial Green Check your sizing! We do not offer exchanges $190 msrp UPPER 100% recycled polyester mesh, TPU overlays; 48% recycled thermoplastic polyurethane (rTPU), 42% TPU, 10% polyurethane (PU) LINING Collar lining: 100% recycled polyster (rPET), Tongue lining: 80% rPET, 20% PU FASTENING 100% rPET laces OUTSOLE Midsole: 100% expanded thermoplastic polyurethane (E-TPU), Outsole: 30% synthetic rubber + 24% nitrile rubber + 20% natural rubber (latex) + 18% filler + 8% vulcanising agent