Speedo Women&#39;s Hydro Trainer,White/Navy/Grey,11 M US,Speedo,7493128" /> 100% Mesh and synthetic Rubber sole New, exclusive "Hydro Tread" rubber outsole for water dispersion and maximum traction Features "360 Degree Ventilation" with perforated removable footbed and upper mesh for complete drainage and maximum breathability Quick adjust bungee lace for an optimal fit in the ideal water aerobics shoe Multi directional, non marking outsole with drainage ports for superior grip and exclusive "Speedo Foam" lightweight EVA to provide shock abosrption and long lasting comfort