Birkenstock 'Milano' Birko-Flor (Women's) Heel-Strap Sandal, Basalt (39 M EU - 8-8.5 US Women) Birko-Flor upper (this synthetic, light-weight yet sturdy material was developed by Birkenstock as an alternative to leather. This material is made of soft acrylic and polyamide felt fibres with a durable smooth leather-like finish). Every Birkenstock sandal is still made in Germany; a tradition that requires a natural respect for both the environment and future generations. Synthetic sole Birko-Flor Upper - Synthetic - Non-Leather (This material was developed by Birkenstock as an alternative to leather. This material is made of soft acrylic and polyamide felt fibres with a durable smooth leather-like finish). Tour all summer in the Milano from Birkenstock. Three adjustable buckles strap you in for a personalized fit. The cork and latex footbed forms to the shape of your foot. The shock-absorbing EVA sole cushions every step you take. Classic two-strap Birks with the addition of a heel strap, each fully adjustable. Birkenstock contoured cork footbed supports the arches of the foot and features a suede liner, a deep heel cup for stability, and a toe bar to promote the foots natural gripping motion, stimulating circulation.