Anatomically shaped cork-latex footbedMade in Germany; If footwear becomes wet, allow to slowly air dry away from direct heat; To clean footbeds, spray with water or with Birkenstock Cleaner & Refresher and wipe away excess moisture and dirt with a cloth; To clean Birko-flor and birkibuc uppers, wipe clean with a damp cloth Oiled nubuck leather upperAvoid extreme heat; If cork soles begin to appear dry, apply a thin coat of Birkenstock Cork Sealer for protection; For more stubborn dirt, use a toothbrush and gently scrub the area with water Suede footbed liningDo not wear or store Birkenstock footwear near campfires, fireplaces, or indoor radiators; Regularly apply Birkenstock Water & Stain Repellent to protect leather, suede, and nubuck upper materials; Do not over-saturate the footbed EVA soleDo not leave footwear in hot vehicles; Please bear in mind that any cleaning or treatment can change the look and finish of the materials; To clean leather, suede, and nubuck uppers, brush excess dirt or dust away with a nubuck/suede brush Single strap with an individually adjustable metal pin buckleDo not leave footwear exposed to direct sunlight for extended periods; After cleaning, always allow footwear to air dry completely, out of direct heat or sunlight; Gently rub a small amount of leather cleaner onto the shoe using a cloth; do not over-saturate with cleaner WBTNSFB Birkenstock Boston Soft Footbed The Birkenstock Boston is a veritable classic that can easily be worn all year round. Thanks to its sophisticated, individual design, it has legendary status. With an additional foam layer, the soft footbed offers extra comfort and pampers feet – all day long. The upper is made from extra thick, oiled nubuck leather with an open-selvage finish.