Birkenstock Boston Clogs in Antique Brown Leather, Unisex, 44 M EU (11-11.5 US Men) Leather Imported Leather sole The 'Boston' from Birkenstock is a classic clog that will add style and comfort to your wardrobe. Anatomically correct cork/latex footbed, crafted from cork that is 100% renewable and sustainable, encourages foot health. 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. Birkenstock uses natural distressed leather with an antique/vintage look for the BOSTON Antique Brown Leather sandals so no two are ever exactly alike. Since leather is a natural product, grain pattern and color may vary from hide to hide and even within the hide.