Primus is the best selling trainer from Vivobarefoot built for adventure! Made with a vegan friendly upper of recycled PET plastic bottles. This shoe is soft, light and flexible with a breathable mesh letting feet perform as if they were barefoot. The sock like construction and wide Velcro strap means they're easy to put on and they'll stay on. A great ultra-thin and flexible yet puncture resistant sole with zero drop, completes this ideal shoe for every day play.