DESIGN & TECHNOLOGY: Swiftlock lens technology for easier lens changing Injected cylindrical lens for premium sight Patented frameless technology for optimal scope Armored venting channels in top of lens to make clearing out snow easier Anti-fog coating to help ensure clarity Hydrophobic and oleophobic lens coatings resist water, dirt, dust, and oil Hard coating on lens to resist scratching for unobstructed view Silicone backing on strap to secure fit Triple layer face foam lined with hypoallergenic microfleece Compatible with most helmets 2 year warranty