FLOW Eyeglasses by Etnia Barcelona. Color: RD Red, BL Blue, BR Brown, YW Yellow, Size: 56-17-148. The FLOW glasses feature a slender rectangular design that adds just the right amount of substance at the temple ends and tips. The smooth, graceful contours feel just as light as they look, while the iconic Barberini lenses made of mineral glass ensure perfect optical clarity. With their sleek silhouette and charming elegance, they are ideal for someone looking for minimalist frames with a bit of character. Enjoy a practical and uniquely stylish design with the FLOW.