Calvin Klein – this American brand has been in the lead for decades. Calvin Klein is known of the high quality, refined and exclusive glasses it offers. Butterfly-shaped glasses are similar to cat's eye-shaped glasses. This shape of the glasses is very suitable for the shape of an elongated face. 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. Men - Men's glasses are extremely strong, usually the contour lines of such frames are quite straight and with clearly defined corners. Fullrim - The closed type glasses are strong and durable, because the lenses are covered with metal or plastic frames. This type of frames are recommended for people with high diopters. Black - Black eyeglasses frames or sunglasses with black lenses are a timeless classic. This is the most popular color of eyeglasses frames / sunglasses.