Look, the “whatever’s on sale at the department store” approach to underwear isn’t cutting it anymore. The underwear industry has gotten smarter—maybe too smart, with terms like “moisture-wicking zones” and “targeted compression” being thrown around like spacecraft engineering specs. But here’s the thing: some of these innovations actually make sense. Modal fabrics (a type of rayon) really do feel better than that six-pack of cotton briefs from Amazon you’ve been replacing since 2015. Anatomical pouches...