Consider wearing a black and white crew-neck sweater and sweatpants, if you prefer to dress for comfort without looking like a slob to look cool. Black leather lace-up flat boots are a welcome complement to this outfit.
Black and White Crew-neck Sweater with Sweatpants Casual Outfits For Women
For something on the casual and cool side, try this combination of a black and white crew-neck sweater and sweatpants. A pair of white leather slip-on sneakers is a fail-safe footwear option that's full of character.