The Birkenstock Madrid Is A Veritable Classic That Delights The World Of Fashion With Its Minimalist Design. Here, We See The Sandal With A Silky Sheen Finish. The Upper Is Made From The Skin-Friendly, Hard-Wearing Synthetic Material Birko-Flor®.Features: - Anatomically Shaped Cork-Latex Footbed- Upper: Birko-Flor®- Footbed Lining: Suede- Sole: Eva- Details: A Single Strap With An Individually Adjustable Metal Pin BuckleSpecifications:- Upper Material: Birko-Flor®- Birko-Flor® Is A Skin-Friendly, Tear-Resistant And Easy-To-Care-For Synthetic Material Which Is Exclusively Used By Birkenstock.- 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.