Is the Boston Nova Utility actually waterproof?

The felt upper is treated to resist water, and the rubber outsole keeps ground moisture out. It handles rain and slush, but it is not a fully sealed rubber boot, so deep puddles can still get in.

How does it compare with the classic Boston?

Same clog shape and cork-latex footbed, but the Nova Utility adds a waterproof felt upper, a warm lining and a rubber outsole. It is heavier and warmer, so it is a cold-weather shoe rather than a year-round one.

Does it fit true to size?

It fits like other Birkenstock clogs, so most people take their usual Birkenstock size. The buckle strap lets you tighten the fit, and the lining makes it feel slightly snugger than an unlined Boston.

Can I wear it indoors?

Yes, the cork footbed and rubber outsole work indoors. The warm lining makes it a good house shoe in winter, though the bulk is more than a slipper.

How should I care for the felt upper?

Brush off dirt when dry and spot clean with a damp cloth. Avoid soaking it, and let it air dry away from direct heat to keep the waterproof treatment and shape intact.