Sanita Women's Professional Bonnie Clog Leather Imported Synthetic sole Polyurethane outsole constructed and reinforced with a hard plastic frame to provide stability and durability^Anatomically shaped footbed engineered for arch support and a roomy toe box^Rocker bottom construction allows natural motion from heel to toe encouraging a healthy stride^Approved by the apma for its standards in arch support and orthopedic construction^The design creates a subtle rocking motion that propels you forward while taking the pressure off each step thus reducing the strain on your lower back and legs