Birkenstock Women's Florida Soft Footbed Birko-Flor  Mirror Silver Sandals - 39 M EU / 8-8.5 B(M) US birko-flor Crafted in genuine Birko-Flor upper with fully adjustable buckles for the perfect fit. Anatomically correct cork footbed crafted from cork that is 100% renewable and sustainable encourages foot health. The suede lined foam padded contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Raised toe bar is designed to encourage the natural gripping motion of your feet exercising your legs and aiding circulation. Neutral heel profile and deep heel cup keeps the natural padding of your foot where it belongs - under the heel distributing your body weight more evenly.