I wore a tubular scarf to the grocery store the other day, and spent most of the time breathing shallowly so my glasses wouldn’t steam up. On the bike it was fine, because the wind kept everything clear. But as soon as I stopped, the mask funneled my hot, moist breath onto my specs, and I couldn’t see.
Luckily, the Tokyo Metropolitan Police Department knows a thing or two about keeping your spectacles clear while you wear a mask. Here’s how to do it.