A new closed model: Zürich
1964
Karl Birkenstock was on a roll. His creativity spurred him to design more groundbreaking styles over the next few years. In the fall of 1964, at the Foot and Shoe Trade Fair in Hamburg, he launched a new ’closed model’, which later became known as ‘Zürich’. In the design Karl kept the brutalist core. Again a clear silhouette was created, keeping the visibility of its construction. This sandal featured a wide upper, available in both leather and wool versions for regular outdoor wear as well as indoor use as a slipper. Madrid with its single strap wasn’t a typical shoe. Wearing a sandal wasn’t common in those days, especially for men, so Zürich was designed with the same principles as Madrid but to cover the foot. From the functional side, it appealed to motorists, older people and professionals, all of whom benefitted from the enhanced coverage, support and grip offered by the broader shape. Meanwhile, both styles were embraced by members of alternative movements taking part in protests as well as the general public, who by now were coming around to the idea of health-promoting footwear. The design concept that had broken convention was moving step by step into the mainstream.
The two-strap sandal Arizona
1973
November 1973 was a major date in BIRKENSTOCK history, marking the arrival ‘Arizona’. The design of Arizona was based on Zürich. Karl ‘opened’ the shoe, keeping the silhouette and following his strict design rules. Initially, it was made with a synthetic ‘sportswear’ upper backed with genuine leather, available in either black or white. Over the next four decades, hundreds of variations were designed and millions of pairs sold, making this iconic model BIRKENSTOCK’s bestseller. Today, Arizona is the quintessential BIRKENSTOCK sandal. This design has featured on the pages of renowned fashion magazines, as well as on the feet of a wide range of international and intergenerational celebrities. Fans include Apple founder Steve Jobs, who was an early adopter in the 1970s, Leonardo DiCaprio, Julia Roberts, Charlize Theron, Tracee Ellis Ross, Jeon Jungkook, Gigi Hadid and Kaia Gerber.
The cork clog: Boston
1976
In the 1970s BIRKENSTOCK set about creating a cork clog. Rather than being heavy or rigid – like many of the wooden styles at the time – ‘Boston‘ was lightweight and flexible. It hit shelves in 1976. Available in numerous colors and materials, this minimalist closed-toe model became another go-to style for indoors and outdoors, work and leisure. BIRKENSTOCK’s signature functionality and quality combined with fashion-forward styles – including more recent shearling and Big Buckle versions – has attracted a loyal following of Boston fans. Notable wearers include Whoopi Goldberg, Sienna Miller, Keira Knightley, Robert Pattinson, Kanye West and Jason Momoa.
The Thong Sandal: Gizeh
1983
Karl Birkenstock’s creations hardly followed mainstream fashion – offering a choice of colorways was about the closest he came to thinking about style. He never adapted the iconic and basic design of his sandals to fashion trends. But as thong sandals became ubiquitous, eventually Karl did see that he could again create something special by designing a new style. This staple shape was not compatible with the all-important BIRKENSTOCK footbed, so Karl set about creating a version that was. After three years of meticulous tinkering, he finally perfected the brand’s first design-led selection of thong sandals. ‘Gizeh‘ was the stand-out success, going on to form part of today’s core collection. Over the years, this chic style has been sported by the likes of Julianne Moore, Heidi Klum, Anne Hathaway and Ashley Olsen.