1. Guardian pants, usually refers to pants made of two fabrics, cotton or polyester. Some have brushed inside, which is thicker and warmer, and is more suitable for wearing in autumn and winter. This kind of pants are not suitable for wearing as leggings, otherwise they will look bloated.
2. Sweatpants can be sweatpants made of the above-mentioned materials, or sweatpants made of fabrics such as polyester. Generally the former is more suitable for wearing in winter, the latter is suitable for wearing in summer. Sports pants are more focused on sports, easy to wick away perspiration, looser, comfortable to wear, and very suitable for sports.