Are you looking for a sandal that combines comfort and fashion in a design that’s uniquely molded to the shape of your foot? If so, you need a pair of Birkenstocks in your life. The popular sandal brand was first created in the 18th century, when German shoemaker Herr Birkenstock decided to create a shoe that didn’t have a traditional flat footbed, but was instead designed to fit the actual shape of a foot.

Since then, the powerhouse brand has continued to think outside the box to create footwear that’s both impossibly comfortable and impressively stylish. Whether you’re getting ready to purchase your first or 20th pair of Birkenstocks, here’s a helpful buying guide that tells you everything you need to know.

Some Birkenstock Sandals Are Unisex

While many Birkenstock sandals are designed to be worn by either men or women, it is possible to find some based on your sex. If you’re looking for a more feminine style, you can find women’s Birkenstocks that are a bit more feminine than the unisex versions.

Selecting Your Size

Birkenstocks are intentionally designed to give your feet room to breathe. However, your feet shouldn’t slosh side-to-side in them. You’ll need to understand European sizing to find a pair of sandals that’s the right fit. A European size 39, for example, is a women’s size 8 or a men’s size 6 in the U.S. You can find helpful sizing conversion charts online to help you figure out what size you should buy. Birkenstocks are also available in both regular and wide widths.

Leather Alternatives

Birkenstock has developed sandals that are made from synthetic materials and are easier to clean than leather. Birkenstock EVA sandals come in a variety of colors and styles and are highly flexible. They are also ultra-light and waterproof, so you can wear them anywhere without worrying about water damage.

Now that you know a little about your Birkenstock sandal options, you’ll have an easier time shopping for the perfect pair. The durable sandals typically last for years, so you won’t need to worry about replacing them anytime soon.