Today may not be Pi day (March 14, 3.14, get it?), but we thought of Pi (a.k.a. π) and mathematicians when we first saw this full-rim, round, medium-size, mixed-material Unisex eyeglasses frame. Just putting on these glasses makes you look like a genius, whether you get the black and silver model or the tortoiseshell and green version. Both have silicone nose pads for a comfortable fit and spring hinges on the adjustable temple arms, which, like the bridge, are ornamented with filigreed metalwork to create the popular steampunk effect. If you want people to stop asking you to solve math problems when you're wearing these glasses, tell them this joke: "Who was the roundest knight of King Arthur's round table? Sir Cumference. He ate too much Pi." They'll stop. They'll laugh, but they'll stop.