1. The anti-fog film is made of a molecular structure material with anti-fog function.2. Continuous anti-fog for more than 5 years. Protect eyesight and eye skin by disinfecting ultraviolet rays.3. After the rain is wet, the anti-fog effect will not be reduced after wiping with a cloth, and it can be used continuously.4. Suitable for full helmet, half helmet and open helmet.size:28.5x12cm Material:PEcolour:TransparentPackage Contents:1 x helmet anti-fog film1 x Alcohol bag1 x Dust removal sticker1 x installation tool1 x Cleaning clothOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.