Randolph Engineering Archer sunglasses feature a timeless modified aviator design, perfect for everyday wear Randolph Engineering sunglasses are handcrafted in USA andmeets military standards to fulfill your top-quality expectations Full rimmetal frames are durable yet lightweight Signature Randolph Engineering logo on the lens and temple Cool aviator frame with double bridge offers a sporty look Adjustable nose pads offer secure fit and all daycomfort Available in different colors and finishes Includes a Randolph Engineering cleaning cloth and a protective carrying case Due to manufacturer's restrictions, Randolph Engineering products cannot be shipped to AustraliaThese sunglasses are available with polarized lenses on certain colors. Polarized lenses have a filter within the lens that blocks the wavelengths of light that cause glare. They can greatly enhance contrast and allow for greater depth of vision, especially in water. They are ideal for any situation where glare reduction is necessary, like driving or playing sports.The sunglasses are available on certain colors with gradient tinted lenses - Gradient tints are tints that start off at a darker color at the top of a lens and then gradually lighten towards the bottom of the lenses. These tints are great for fashion and for reading outside on sunny days. Gradient coatings work by allowing an appropriate amount of light to filter through in certain areas and less in places where protection is most necessary.