Birkenstock brings over 250 years of footwear expertise to the Reykjavik, a bold and contemporary closed-toe shoe that reimagines the brand's classic clog construction through a decidedly urban lens. Drawing design inspiration from Birkenstock's Professional footwear line, the Reykjavik is defined by its exaggerated polyurethane (PU) sole — a chunky, durable shell that wraps the shoe with exceptional grip and all-day resilience suited to active city wear. The upper is crafted from brushed nubuck leather, a top-grain hide with a velvety, soft-to-the-touch surface that develops a natural patina with wear, while the single adjustable strap with a metal pin buckle across the instep echoes the clean silhouette of a classic Mary Jane. Inside, Birkenstock's premium removable Deep Blue Footbed is.