Nike Free Viritous - Women's While summer’s busy getting all hot and sticky, the Nike Free Viritous Women’s Shoe keeps cool with a light and breezy barefoot feel. Interior bootie design means no socks necessary. Flywire technology dials in a custom fit. Cooling cut-outs and a stretch mesh upper create a light, breathable barefoot feel. Free 3.0 outsole has natural motion siping for ultimate flexibility.