Alegria Women's Classic Open Back Slip-Resistant Nursing ClogsWelcome your new favorite open back clog! Slip resistant polyurethane outsoles are engineered to provide a natural rocker walking motion. Removable (and replaceable!) footbeds (also called insoles) are constructed of cork, memory foam and latex which creates a perfect fit by forming to the natural contours of your foot. Heel height: 1. 75 inches Structured outsoles that also promote perfect posture thus reducing stress on muscles and joints Superior