Birkenstock is a German footwear brand founded in 1774 by Johann Adam Birkenstock. The brand is known for its comfortable and supportive sandals and shoes. Birkenstock has gained a following among those who value comfort and sustainability and has collaborated with other fashion brands, such as Rick Owens and Jil Sander. The brand's iconic two-strap sandals, the Arizona, have become a staple of casual fashion.