Metal - The eyeglasses frames that are made of metal create a minimalist image.They are light and adjustable nose pads are almost always attached to them for maximum comfort. Women, Men (unisex) - Universal glasses are perfect for both men and women. Rimless - Open-type eyeglasses lenses are only partially enclosed in frames, making them lighter than closed-type. They are durable, also help emphasize the eyes and create an elegant image. Black - Black eyeglasses frames or sunglasses with black lenses are a timeless classic. This is the most popular color of eyeglasses frames / sunglasses.