Sweatpants — those comfy couch staples — have worked their way into the fashion world and we're not complaining. But before you dig out that pair lurking at the bottom of your gym bag, a cautious note —today's smart joggers are altogether different beasts from their saggier cousins. Since they first appeared on the spring runways a few seasons ago, the styles and materials have been trending ever more upscale. The cut is tapered at the ankle and closer fitting for a leaner, tailored, more flattering appearance. The good news? Get it right and you won't look like a man who's given up on getting dressed. Hell, you can even wear them to the office.