Dr. Weil Faith Women's Sandal leather Built-in Biomechanical Orthotic Arch Support - Orthaheel technology properly aligns your feet with you lower limbs - impoves balance- posture and foot comfort. The Faith has soft- premium full-grain leather with faux snake-skin print uppers with an adjustable strap. Flexible cork midsoles absorbs shock to reduce stress on the feet- ankles and knees. Durable rubber outsole. Medium Width AMS - Aided Motion System - combines innovative and tested technologies that will take you where you want to go- balanced- energized- and in comfort.