The most sought-after clog, the Boston lends a fashion-forward edge to any style. Velvety suede gives the laid-back look classic, every season appeal. Featuring an additional foam layer for cushioning, the soft footbed offers extra comfort plus go-all-day support. Cushioned BIRKENSTOCK soft footbed creates custom support with wear Oiled leather upper Suede footbed lining helps keep you comfortable EVA sole is flexible and lightweight Adjustable strap with metal pin buckle “Made in Germany” quality stamp on footbed Material :  Special feature:  Soft footbed The soft footbed has an integrated latex foam cushion. So, it offers excellent comfort from day one. Upper material:  Oiled Leather Oiled leather is one of Birkenstock's favorite types of leather. Its oily waxed surface makes for a unique color effect and develops a beautiful patina. The oily finish of our natural leather products results in color variation, making each and every pair unique. 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.