Hign-concerned Chemical:None Helmet Style:Full Face Gender:Unisex Origin:Mainland China Item Type:Helmets Material:Nano size:8.5*24.5cm Inside sticker Purpose:anti-fog Outside sticker Purpose:rainproof Specification: Product name: helmet anti-fog and rainproof film Applicable helmet: general Purpose: Inside sticker: anti-fog, outside sticker: rainproof Material: Nano Size: 8.5*24.5cm quantity: 1 description: 1. The anti-fog film is made of a special molecular structure material. After being wet with water, the anti-fog effect will not be reduced. It can be used continuously after rinsing with water and wiping with a cloth. 2. Full frame universal helmet patch, long-lasting anti-fog aging for more than 3 years 3. Good light transmittance makes riding easy and reduces eye fatigue