The Birkenstock Zermatt Slippers are perfect for slipping on when roaming around base camp or laidback weekend adventures. Featuring a removable footbed, they allow you to interchange with other Birkenstock insoles (sold separately) for optimum versatility. The standard footbed (included) replicates the natural print made by a foot walking on sand and will see you through the day in endless comfort. The upper is also made from soft wool felt, while the flexible suede lining nestles up softly against your foot and adjusts to its contour. Additionally, the signature cork used in the footbed is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers excellent cushioning.