ZEN Eyeglasses by Blackfin. Color: Green/Gunmetal, Navy Blue/Silver, Black/Gray, Size: 48-21-150. Blackfin's ZEN eyeglasses represent a pinnacle of refined elegance and modern design, making them an ideal choice for discerning individuals who value both aesthetics and functionality. These eyeglasses are crafted with meticulous attention to detail, reflecting Blackfin's commitment to quality and precision. The ZEN model offers a perfect blend of style and comfort, ensuring that wearers experience the best in optical performance throughout their day. Designed to make a subtle yet impactful statement, these eyeglasses are perfect for those who appreciate a sophisticated look without compromising on comfort or durability.