For a goofproof casual option, you can't go wrong with this combination of a black leather vest and grey sweatpants. If you're not sure how to finish off, complement this outfit with black high top sneakers.
Black High Top Sneakers with Grey Sweatpants Outfits For Women In Their 30s
If you appreciate function above all, choose a black studded leather biker jacket and grey sweatpants. Complement this look with black high top sneakers et voila, this outfit is complete.