Vivobarefoot Primus Lite IV All Weather Women's Barefoot Shoe Red ClayVivobarefoot Primus Lite IV All Weather Women's Barefoot Shoe Red Clay Brave the elements. Feel your power. The Primus Lite All Weather is a lightweight, water resistant women's trainer that carries you through the seasons. PRIMUS OUTSOLE The Primus Outsole is a light and thin 2mm performance outsole that's designed to put as little as possible between your feet and the ground. The side wall profile is as low as it can be, giving it a slightly lower