The Birkenstock Boston Vegan Birkibuc Khaki is part of a vegan collection by the renowned shoe brand. This made-in-Germany sandal features a Birko Flor nubuck upper and a microfiber footbed lining over a color-coordinated EVA outsole. The khaki version is designed with a strap that has an individually adjustable metal pin buckle. Initially released on August 1, 2022, it retailed for $120.