Heel height: Approx. 1 3/4'' Tall. Spring Step Professional style Fast Track is smooth leather slip-on offering in Walk 'n Roll Collection. Walk 'n Roll Collection is designed to enrich your lifestyle by improving the way you walk, stand and the way you live your life. This advanced technology will help you to work more comfortably than ever before. It takes pressure off of your lower body, which improves you posture, resulting in a healthier, more toned and fit physique. We used the best natural material to guarantee lasting comfort and durability.