The Birkenstock Women's Arizona Birko-Flor Sandals - Regular are genuine classics destined to be your go-to shoes. They're packed with fabulous features to keep you comfortable, supported and in alignment even after hours on your feet. The contoured cork footbed has a deep heel cup that cradles the heel, while longitudinal and transverse arch support provides stability and a solid stance. Skin-friendly synthetic Birko-Flor® uppers are made from easy-to-care-for and durable PVC (Polyvinyl Chloride) lined on the inside with a soft, breathable layer of fleece.