What makes these shoes so comfortable? Removable Insole---Foot problem? No problem! Removable footbed allows insertion of custom orthotics to reduce your problems. Leather Insole---Don't sweat it - naturally breathable leather insole with built-in arch support to bring even more happiness to your feet. Anatomically Correct Footbed---Footbed designed to form the natural shape of your feet for long lasting comfort. Rocker Outsole---Engineered to roll naturally reducing heel and central metatarsal pressure. Rocker outsole also encourages proper posture and normal gait. In English? You ROCK! Extra Depth----Extra depth makes a roomier fit and a roomier fit makes wiggling all five toes easy and fun. Flat, Stable Bottom---Flat bottom maximizes contact with floor for increased stability.