birkenstock
Bir•ken•stock (bʉr´kən stäk)
[[trademark of Birkenstock Orthopadie GmbH, German firm, after Johann Birkenstock, 18th-c. shoemaker whose descendants founded and manage the firm]]
trademark for a kind of shoe, typically, a toeless sandal with a form-fitting, cork insole and wide straps that buckle over the instep: wearers of such footwear are sometimes associated somewhat contemptuously with having progressive or liberal political views