The Slim-Fit Sweatsuit
Credit: Photograph by Greg Broom

Sweatpants are now slimmed and tapered for a cleaner look that works even with a button-down shirt and sneakers, while hooded sweatshirts are cut leaner so they fit comfortably under a topcoat or denim jacket. Try a cashmere hoodie and you'll never go back to cotton. [Everlane Seed Stitch Hoodie, $75; everlane.com]