Specifications<br> Hign-concerned Chemical:None<br> Material:POLYESTER<br> Motorcycle Helmet Visor Lens For KDF-16-1 Scorpion Exo 1400 Carbon, R1 Air EXO 520 EXO 391 Anti-UV Anti-Scratch Dustproof Wind Shield<br> Fits the following helmets with the KDF-16-1 Mechanism<br> Features<br> 1.Fine toughness, high flexibility.<br> 2.Multiple colors for your choice.<br> 3.Anti-UV, Anti-fog and Anti-scratch treatment.<br> 4.Easy to change, use immediately.<br> 5.Protects your eyes from sunlight, wind, rain and insects while driving, guarantee your driving safety.<br> Fitment<br> For Scorpion Exo 1400 Carbon, R1 Air EXO 520 exo 391<br> Specifications<br> Condition:, reliable quality<br> Product Name: Motorcycle Helmet Lens<br> Material: PC<br> Qty: 1pcs<br> Helmet style: Full Face<br> Color(optional)<br> Tea Revo Red,Ice Blue,Silver,Tea (Suitable For Daytime)<br> Clear Revo Red,Clear Revo Blue,Clear (Suitable For Day and Night, They show different shades of color in different light )<br> Package included<br> 1Pcs Motorcycle Helmet Lens<br> Universal anti fog sticker, not snap on anti fog sticker, suitable for all sizes and helmets<br> The REVO model looks very transparent with a light transmittance of 90%, and it will have a better effect when installed on a helmet.<br> Principle of Photochromic Lenses 1. UV-Triggered Tinting: The lens contains light-sensitive materials like silver halide or spiropyran-based compounds, which undergo reversible chemical reactions when exposed to UV light. This causes the lens to darken, blocking intense light and absorbing UV radiation. 2. Transparency Restoration: In low or no UV conditions (e.g., indoors), the chemical structure reverts to its original state, restoring transparency for clear vision. 3. Self-Adjusting Mechanism: The entire process is automatic and dynamic, balancing optical clarity with light protection without manual intervention. Summary: The lens achieves "darkening under light, transparency in darkness" through molecular structural changes in UV-responsive materials.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store