Features: Non-Woven hat sweatband, soft, lightweight, environmentally-friendly and skin-friendly. Self-Adhesive cloth tape makes it easy to stick on the insides of your hats/caps firmly by peeling off the protective film. Not only prevents sweat stains to keep your hat clean and extend its lifespan but also can adjust your hat size. Absorbs dripping sweat, prevents eyes from burning sensation, reduces dirtiness on the brim and unpleasant odor. Great for any structured hat for men, women, or children. Fedora hats, women's hats, cowboy hats, cabbie hats, or newsboy hats, and more. Specification: Material: Non-Woven Cloth Size: As shown Color: Black, white Package Includes: 20 Pieces Hat Sweat Bands Note: 1. Due to manual measurement, please allow an error of 1-3mm. 2. Please understand that the color may differ slightly from the real item due to screen display.