Heat Wave Future Tech Z87+ Safety Glasses are the future of high-speed performance. They're aggressive, loud, and innovative beyond any pair of sunglasses before them. The Future Tech incorporates a multitude of cutting-edge features that complement its overall futuristic design and enable it to stand on its own in the performance and safety category. Features include 2 mm thick lenses with side shield protection for a package that meets Z87+ standards out of the box. Hytrel touch points on the nose and arms allow for a comfortable all-day fit that grips and stays in place. Key Features: Meets ANSI Z87.1+ requirements HYTREL touch points for non-slip comfort Tool-free Push-Lock swappable lens Lenses are U6:L3 UV400 - 100% UVA / UVB blocking