Sweatpants are soft, loose-fitting pants made from thick cotton or fleece fabric, designed originally for athletes to wear during warm-ups or after exercise. The fabric helps absorb sweat and keeps muscles warm before and after physical activity.

Today, sweatpants are just as common for relaxing at home as they are for sports. They usually have an elastic waistband with a drawstring, making them comfortable for lounging on the couch, doing homework, or running quick errands. Many have elastic cuffs at the ankles to keep them snug.

People sometimes call them sweats for short, and they're part of a larger category of comfortable clothing called activewear or athleisure. While sweatpants are perfect for comfort, they're generally considered too casual for occasions like school performances, religious services, or nice restaurants. That said, fashion changes, and what counts as acceptable has shifted over time. Some schools allow sweatpants as everyday wear, while others reserve them for gym class.

The key thing about sweatpants is that they prioritize comfort over formality. They're the pants equivalent of your favorite well-worn t-shirt: not fancy, but wonderfully comfortable.