resistant & Protective Design Made with strong EVA substance featuring PET adhesive backing, these hat liner pads effectively and dirt buildup inside headwear. Ideal for warm conditions to maintain during outdoor activities. Comfortable Ventilation The perforated EVA structure allows air movement while the skin friendly adhesive ensures secure attachment without irritation. Keeps forehead dry during physical activity or everyday wear. Customizable Fit & Easy Installation Pre cut 10 piece set fits most standard cap sizes (adjustable positioning). Simple stick on application requires denial tools repositionable for perfect placement when desired. Resilient Sustainable Build Tough EVA foam maintains shape through prolonged use while being environmentally considerate. PET backing enables clean removal without leaving adhesive traces on hats. Multi activity Essential Important for runners, cyclists and outdoor enthusiasts to absorb sweat during active movement. Preserves cap freshness between washes and extends headwear usage time.