Brand new Tried on inside,never worn outside Black prit smudges easily on a light leather insoles Sz 42 US 11-11.5 Details: Super flexible and light as a feather, the Celina ballet flat from BIRKENSTOCK offers airy comfort and support all year round. The elastic heel band helps provide a secure fit. Suede uppers are paired with tonal EVA outsoles for a simple monochromatic look.