It's slender

They are flexible and contour to your feet ensuring they stay on

Fleece-lined

Microfiber lining

durable and oil and fat resistant

Birkenstock — Boston Oiled Leather - Black Narrow Width Size:37 It's slenderThis signature slip on from Birkenstock is a proven classic with it's simple, adjustable design and contoured cork footbed that conforms perfectly to the shape of your foot. The Boston clog features pronounced arch support, a deep heel cup and a roomy toe box and comes in luxurious oiled leather that only gets more beautiful with time. Leather upper Suede lining Anatomical cork latex footbed Shock absorbing EVA Made in Germany We only carry the Black