Dr. Martens Zebzag Mules. The Zebzag mule is Dr. Martens' latest innovation in comfort: built on a hybrid air-cushioned sole that fuses feather-weight EVA with rugged PVC. Crafted from lightweight, versatile suede, they’re designed to be worn however you feel like – in summer or out of the conventional season. The adjustable strap ensures a secure fit, while the welted construction delivers Dr. Martens' signature durability. Yellow welt stitching marks the mules as Dr. Martens. Platform height: 1". Heel height: 1 1/4". Wider footbed and more rounded toe shape. Imported.