About the brand: Iconic and sustainable designs that are always on-trend. Please note: Size selections are European. For US conversions, please reference size chart. Siena Big Buckle Narrow Fit Birko-Flor Sandal in black Birko-Flor and silver-tone hardware Buckle closure Original Birkenstock® suede-lined natural cork footbed that molds and shapes to your foot, featuring pronounced arch support, deep heel cup, and roomy toe box. Man-made sole Made in Germany