If the situation permits off-duty styling, try pairing a crew-neck sweater with black sweatpants. Add white leather low top sneakers to the mix and you're all done and looking smashing.
Black Sweatpants with Crew-neck Sweater Smart Casual Outfits For Women
If you're scouting for an off-duty but also chic outfit, marry a crew-neck sweater with black sweatpants. Throw a pair of black leather ankle boots in the mix to avoid looking too casual.
One of the coolest ways to style out a crew-neck sweater is to combine it with black sweatpants for a laid-back outfit. As for the shoes, you could go down a classier route with black leather ankle boots.