Desc. Features Specs & Guarantee Fogged up lenses are annoying, but let's be honest, they can be downright hazardous. Simply put, if you can't see what you're doing you could wind up in a jackpot in the blink of an eye, and we ain't talkin' about the Powerball.Introducing Heat Wave Anti Fog Tech. Each pair features a dual surface lens coating that prevents condensation from forming, ensuring your vision stays crystalline and your glasses stay on. Due to the nature of soft anti fog lens coatings, extra care should be taken to ensure that glasses are cleaned properly and free from debris - Only use provided microfiber to clean lenses. Take good care of them, and they will take good care of you.If you've got a big head these are the glasses for you! You asked and we listened - the first pair of extra large Heat Wave frames specifically designed for the Godzilla customer are finally ready to smash out our warehouse doors. We took the time-tested design of the Vise and added an extra 10mm in width and jacked up the height to 54mm to provide larger than life comfort and coverage. The XL VISE also meets ANSI Z.87 impact requirements and is compatible with our Vise Side Shields to give you the Z87+ protection for the toughest jobs on the yard. The XL VISE Z87 meets OSHA eyewear specifications for jobs not requiring side shields and chemical splash resistance. -Includes Microfiber bag-Vapor Clear frames & Metal inlay logos -California residents, please read the Proposition 65 warning Disclaimer: Removing arms, lenses and or changing configuration in any way voids Z87 compliance. Z.87 compliant, U6L3 - UV400 - 100% UVA / UVB blocking.Shatter-resistant polycarbonate lenses. Durable polycarbonate frame construction. 100% Satisfaction Guarantee - If you are unhappy with an item for any reason we will gladly accept unworn product in it's original packaging for full refund within 60 days from the date you received it. Warranty: We fully back all of our products against manufacturer's defects. If you have any issues, we will replace any defective or malfunctioning part at no charge. For more information on our warranty policy please visit: Heat Wave Visual Warranty and Returns