CLYDE RIVER Eyeglasses by Blackfin. Color: Blackfin Black, Silver/Gray, Blue/Gray, Blue/Gray, Green/Black, Size: 51-19-145. The Clyde River eyeglasses offer a bold yet refined look, combining sturdy construction with a stylish design. Featuring a titanium frame with intricate detailing, these glasses are designed for those who seek both durability and fashion. The Clyde River stands out with its unique blend of elegance and strength.