Birkenstock Womens Mayari Soft Footbed Sandal Mirror Silver Size 39 EU (8-8.5 M US Women) birko-flor Imported Firm resilient cork/latex base gives your feet the support they need Raised toe bar encourages the natural gripping motion and improves circulation Contoured footbed supports all four arches distributing body weight more evenly Soft suede footbed liner keeps your feet comfortable and dry Neutral heel profile and deep heel cup promote healthy alignment