Self Adhesive: non woven fabric tape makes easy to adhere insides of your hats/collar firmly by peeling off the protective film. sweat pads: Absorbs dripping sweat, reduces dirtiness on hat and collar brim, avoid unpleasant smell. Multifunctional: Not only prevents sweat stains to keep your hat/clothing clean and have a long life but also can adjust your hat size. Easy to Use: Easy to use and carry, just peel and sticks it inside your hats or collar; no need to clean. Widely Used: Great for any structured hat for men, women children, can also be applied to the clothes or underwear to help absorb sweat. Used on shirts, blouses, hats etc. Specification: Material: Non woven fabric Color: White Size Chart: Width: 2.5cm/0.98inch Length: 3m/9.84ft, 5m/16.4ft, 8m/26.25ft. Package Includes: 1 Self Adhesive Collar Protector sweat pads Note: Please allow slightly errors due to manual measurement and different monitors.