NOTE: Buy them while you still can! Once I run out they are gone! Randolph has decided that they will no longer allow anyone to sell these prescription frames except through a Randolph approved optician. These Randolph Engineering Concorde frames are crafted with the same precision and durability as the Randolph military aviator sunglasses, adhering to exacting standards with over 200 meticulous manufacturing steps. Made with a sturdy nickel-silver alloy, these frames are designed for quality, comfort, and endurance. Ideal for those who prefer classic aviator styling with a premium feel, these frames are built to withstand everyday wear. Product Details: Material: Nickel-silver alloy for long-lasting durability Included: Hard carrying case, microfiber polishing pouch Customization Option: Available with brand new Trivex prescription lenses upon request, or consult with your optometrist to fit your own choice of prescription lenses.