No Sweat Hat Liner is a disposable Liner / Sweat Absorber that sticks on the inside of ANY hat, cap, mask or helmet and soaks up sweat so you do NOT have sweat dripping down onto your face and into your eyes or glasses while you are playing or training. Sports players of all ages and levels are currently using NoSweat in their hats NoSweat's patented design and Dri-LID technology is engineered to absorb forehead sweat and clear your line of vision. Allowing you to keep your eye on the prize and take your game to a whole new level. No Scent technology helps prevent stains and eliminate odors, keeping your LID Cleaner. Fresher. Longer. BENEFITS: Keeps sweat out of your eyes & glasses Prevents NASTY Sweat Stains on your LID Hypoallergenic -- Helps prevent acne & skin irritation Comfortable -- Thin, soft, and lightweight. No Scent Technology -- Reduces Odor Reduces Sweat & FOG in glasses or eyewear Patented universal design -- Sticks inside the front and/or back of any LID 100% AMERICAN MADE"