509 Dirt Pro Motocycle ATV Goggle Black Ops Hinged Strap Mount - Unlike traditional goggles which use a fixed strap mount, our goggles are designed to work with an open faced MX style helmet. The Dirt Pro straps attach to an articulating hinge system, which ensures a perfect fit with any open faced helmet by allowing the goggle to fit firmly, yet entirely comfortable against your face. These articulating hinges open up, allowing the goggle to sit further back in your helmet without pulling the sides of the goggle away from your face. 13 Vent Ports - We designed the Dirt Pro goggle to provide venting to keep you cool while you work under intense conditions. The top frame of the goggle is made up of 7 vents, providing a constant downstream of cool air. The bottom of the goggle features 6 exhaust ports which release hot air. This 13 vent system works together, keeping fresh air circulating in the goggle. All vent ports are protected by a durable foam cover, stopping any dust or dirt from entering the goggle.Chrome Lens - 509 Dirt Pro's come standard with a single pane, non-vented dirt lens that has a durable anti-scratch & anti-fog coating. They are also 100% UV blocking and shatter proof. They also features our innovative three post tear off system. Dirt Pro lenses are easily interchangeable and can be swapped with any of our dirt replacement lenses. Removable Nose Guard - Dirt Pro goggles include a removable nose guard. This rigid guard shields your nose from rocks, dirt, and debris. Made of a durable rigid material, this guard can withstand even the largest debris that comes at you. Our unique removable design allows you to easily install or remove the mask in a matter of seconds. When installed it stays securely fastened and WILL NOT fall off. It also features a unique vented design, which allows a constant flow of air to keep you cool.