Every snow goggle we design at SPY+ pairs a unique style with uncompromised fit, clarity, and advanced interchangeable lens technology, ensuring that you will always have an epic day on the slopes. The Mainstay is extremely adaptable goggle that offers 2 interchangeable ventilated lenses providing the wearer with a category 1 low light lens and a category 3, lens for those brilliant blue birded days out on the slopes.  The Mainstay goggle provides optimum vision, in all weather conditions. Features: • Classic Cylindrical Lens / Frame Design • Premium Dual-Pane Interchangeable PC Lens.   • Installed High Definition Bronze with Silver Mirror Lens for bright days • Extra Lens for cloudy days • Soft Triple Layer Foam • Over The Glass Compatibility   • Spy Engineered Venting System • High Quality Anti-Fog Treatment • Scratch Resistant PC Lens • Siliconized Strap • UVA/UVB Protectant • ASTM Certified Questions? Leave a comment below!