Women's ankle boot with special BZEES Air Step Technology: Designed so you’ll feel weightless, energized and free Ultra Lightweight: Step lightly with a nearly weightless feel Dynamic Stretch Fabrics: Move freely in shoes with built-in stretch FreeFoam Comfort: Low pressure insoles with maximum foot contact and cushy arch support Odor Control technology, 3 1/8 inch sole, and Machine Washable: Wash on cold and air dry 1 1/4 inch sole