The Ra III lace-up shoes from Vivobarefoot are built for easy transition from work to play. Design for easy walking, these lace-up flats allows your feet to stride comfortably to allow for a barefoot feel. Premium durable leather upper. Soft and breathable leather and textile lining. Removable 3mm thin Performance insole. Ultra-thin, flexible and foldable. Durable ultra-thin, flexible and puncture resistant rubber sole.