The Paloma features an adjustable velcro instep strap. Of course, it isbuilt on the original stable, rocker outsole that is engineered to roll naturally, reducing heel and central metatarsal pressure. The flat bottom makes iteasy 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!