The Birko-Flor uppers consist of two straps across the top of your foot and a heel strap, all of which are adjustable to deliver an ultra customized fit. The classic Birkenstock footbed is anatomically correct, made of latex and 100% renewable and sustainable cork. The Birkenstock footbed is suede lined and will mold to the shape of your foot, creating a shoe that is made just for you. The raised toe bar is designed to encourage the natural gripping motion of your feet, while exercising your legs and aiding in circulation. For heel support, a deep heel cup keeps the natural padding of your foot where it belongs to help distribute your body weight more evenly. The outsole is made of flexible EVA for a lightweight yet shock absorbent stride. Made in Germany.