Features of sweatpants:
Sweatpants usually refer to sports pants made of two fabrics, cotton or polyester. Some of them will be brushed to suit the autumn and winter seasons. Pantyhose is a kind of trousers with fluffy fabric underneath. Sweatpants can be made into sports pants styles, and can also be made into other styles of bottoming pants.
The trousers have a soft fabric and are long trousers that are worn directly in contact with the body, suitable for spring and autumn wear.
Some will be brushed inside. It’s the kind of thick material.
Pullover sports long-sleeved shirts (fluffy) are called sweaters, and those with fluffy sports pants are called trousers.
Now it can also refer to all sports trousers.