The Castelo sandal features two hook and loop straps across the foot providing the perfect fit. The leather lining allows for all day comfort, while Naot's removable, anatomic cork and latex footbed is wrapped in pampering suede and molds to the shape of the foot with wear. The Utopia Collection features a 1.25" polyurethane sole which is extremely lightweight and durable. American Podiatric Medical Association (APMA) Accepted for promoting good foot health. Our patented Naot Replacement Footbeds are also available for Castelo.