AThe name is self - explanatory, it absorbs sweat. The sweatband is considered the most important part in a baseball cap. A good sweatband makes the cap comfortable to wear. Sweatbands have 3 components - Fabric + Foam + Non-woven tape. Picture shown above is a cap made with one fabric for the crown, peak and sweatband. The double stitching on the front of the sweatband is used to seal the back side tape at the same time. This makes the cap looks more elegant and comfortable to wear.