The Birkenstock Sierra sandal is built to deliver high-level comfort to those on their feet for long periods of time. Constructed with the iconic contoured Cork foodbed, and a reinforced heel designed to be deeper, allowing you to sit further into the shoe for stability. The Birko-Flor Nubuck upper features a sleek matte finish, and compressed felt backing to provide you with a versatile, and functional footwear option.