How does the Boston compare with the Arizona sandal?

Same cork-latex footbed and arch support, but the Boston has a closed toe and a strap over the instep. It is warmer and more workplace-friendly; the Arizona is cooler and easier to slip on.

Do I need to size up or down?

Birkenstock's footbed is roomy, so most people take their normal Birkenstock size, which often runs a size down from their sneaker size. The strap adjusts, but the length does not, so check toe room at the back.

How long does the break-in take?

Most owners report a week or two of stiffness before the cork footbed molds to their feet. Wearing them in short stretches first helps.

Can the Boston be worn with socks?

Yes, and many people do in winter. The roomy fit leaves space for medium-weight socks without pressing on the toes.

Is the footbed replaceable?

A cobbler can replace the cork footbed and outsole, which is a big reason these clogs last so long. Keep them dry, since soaked cork can crack.

What is the difference from the EVA Boston?

The EVA version is a lightweight, waterproof molded clog with a softer feel. The classic has a real cork-latex footbed, leather upper and firmer support, but it should not get soaked.