Upper: Birko-flor Insole: suede Sole: Eva Closure: Velcro Description: The Kairo HL model impresses with its functionality. The Velcro closure avoids any early morning stress, allowing you to put it on easily. It also ensures that the sandal stays firmly on your foot when you go wild. The upper is in Birko-Flor, a wear-resistant and skin-friendly synthetic material.