A classic Birkenstock look. One of their first close-toe styles, the London’s simplicity shines with clean lines and an adjustable buckled strap. Oiled leather – unique characteristics of the leather are highlighted by a rich oil treatment, develops natural patina over time Contoured cork footbed conforms to the shape of your foot and features pronounced arch support, a deep heel cup and roomy toe box; lined with suede Lightweight EVA sole for cushioning and shock absorption Avoid extreme heat “Made in Portugal” Upper material: Oiled leather Oiled leather is one of our favourite types of leather. Its oily waxed surface makes for a unique colour effect and develops a beautiful patina. Insole: Natural leather Natural leather can be recognized by its untreated surface. BIRKENSTOCK purposely does not treat surface grains and other characteristic features. BIRKENSTOCK uses sturdy leather with a thickness of 2.8 to 3.2 millimeters as upper material. Footbed material: Cork Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning. Outsole: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned.