Hey, Dude Shoes are recommended by podiatrists and orthopedists for people suffering from pain in their feet, heels, back, hips, legs, or knees because of the supportive features like arch support and cushioned soles. There are zero metal parts in the shoes so they won't be a problem if you have metal allergies or sensitivity, but we do suggest wearing socks when you wear Hey Dude shoes outside because of the jute top fabric top.