Vi-lite midsole with xs run outsole rubber compound provides the perfect blend of cushioning and durabiltiy.Product runs slightly large. Please size down 1 size from your actual VFF sizenMass perforations in the upper breathe fresh air into smoother fabric for added comfortnZero DropnMachine wash cold. Air drynRedesigned with a softer upper and perforated to maximize breathability, the v-run (formerly Bikila) is now even more comfortable. This is an idea running shoe for those making the transition from traditional to minimalist shoe. The thinner sole lets you feel your run, connecting you to the true barefoot running experience.