They are designed to protect against the elements and to improve your ability to work in the most demanding environments. This large piece of square shape will enhance any outdoor activity. The innovative double-acting hinge system reduces weight and increases durability. The scratch- and impact-resistant premium lens is filled with melanin and blocks blue light. Polarized Pro lenses: 99.9% premium glare reduction with the added benefits of anti-reflective, hydrophobic and oleophobic lenses that remove dirt, water and oil.