Madrid (Birko-Flor)The Birkenstock Madrid is the oldest member of the family of models, making it a veritable classic. Launched as a gymnastics sandal" half a century ago, this simple single strap model has gone on to become a firm fashion favorite. Slip on style One strap with an individually adjustable metal pink buckle Anatomically shaped footbed Regular width Materials Upper: Birko Flor Lining: suede Outsole: EVA rubber Made in Germany Size Guide Fits true to size.