Swan SoundTrippen Sound sandals with an open toe section and an additional Velcro strap around the heel. The double edge at the front prevents the soft inner section from over stretching. Slip on silhouette Heel strap with velcro fastening Vegetable tanned leather insole Cork footbed Open toe Materials Upper: leather Lining: leather Outsole: rubber Made in Germany Size Guide Fits true to size. We recommend taking your normal size. For additional size