The Alegria Debra is designed specifically for health care workers and features a stain resistant upper along with a non-slip bottom. Of course, it is built on the same stable, rocker outsole as the original "Classic" model that is engineered to roll naturally, reducing heel and central metatarsal pressure. The flat bottom makes it easy to walk in while encouraging proper posture and normal gait. The removable leather insole is anatomically correct to form to the natural shape of your foot and distribute weight more evenly. In other words, as you walk comfortably, you ROCK!