Two leather straps with fully adjustable hook & loop closure over the instep allows for completely customized fit. Sandal is also lined in leather. Leather lined removable polyurethane foam insole can be machine washed & air dried, or can be replaced with custom orthotics. The 1 1/2" leather wrapped outsole is made from thermal plastic/rubber as well for a truly soft comfortable walking experience, and superior traction. Made in Portugal.