NWT. American Optical AO Alden Sunglasses. Midnight Hazel Frame, True Color Grey nylon lenses. Lens Color: True-Color™ Gray Lens Type: AOLite™ Nylon Size: 53-20-145mm These handcrafted acetate sunglasses make vintage style accessible to all with a shape, keyhole bridge and colorways that flatter both men and women. Alden features the quintessential AO decor piece that first appeared on AO safety glasses and has captivated vintage hunters for decades. Sturdy 5-barrel hinges give the frames a robust feel and stand up to daily wear.