Please see the conversion chart for the best size to choose Slip into the Men's Birkenstock Boston Suede Leather Birko-Flor Clogs and buckle up for all-day comfort with a classic design that feels at home no matter your mode. Whether making your daily dash to the corner store, lounging around the house or heading out on the town with friends, these premium Birks are a prime choice and feel as good as they look.