ESS Eye Pro Crossbow Replacement Lenses are made from durable 2.4-millimeter high-impact polycarbonate and offer total protection from harmful UVA and UVB rays. These lenses use ESSOPTICS, which allows for completely distortion-free optical precision at all angles. The lenses are treated with advanced ClearZone FlowCoat to eliminate scratching on the outside and fogging on the inside. A no-slip rubber nose bridge holds the lenses securely in place, even when wet. Quickly change lenses using Crossbow's DedBolt Lens Lock system and receive the perfect eye protection for your given situation. These lenses are OSHA compatible and tested according to ANSI standards to ensure maximum strength.