Featuring Max Air cushioning in the heel, this lightweight, secure design assists with confident take-offs and comfortable landings. Rubber wraps the sides to provide enhanced durability and stability. Max Air unit in the heel padding in the heel and tongue herringbone traction on the outsole diamond-shaped cutouts toe skin sculpted foam midsole molded rubber wings in the forefoot forefoot underlay lightweight semitransparent mesh fits small, recommend ordering a half size up