Birkenstock's Sierra silhouette delivers timeless comfort with a refined edge. Crafted from oiled leather that develops rich patina over time, this unisex style features the brand's signature contoured footbed—engineered to support your arch and distribute pressure evenly. The adjustable straps ensure a customized fit, while the durable sole provides reliable traction for everyday wear. Black oiled leather pairs seamlessly with casual and smart-casual wardrobes. A versatile investment piece that combines heritage craftsmanship with modern comfort technology.