VIVO BAREFOOT MEN'S PRIMUS LITE IVPRIMUS LITE IV Run, train and move like nature intended The barefoot training all rounder, refined Our best selling barefoot training all rounder, now re engineered for smarter material usage and reduced production waste. The Primus Lite IV delivers the same trusted barefoot feel with recycled, vegan* materials made for moving naturally, whether you're running or working out. Wide, thin and flexible to elevate every workout, now with a lighter