developed with the legend rob machado . the dragon opus rob machado resin sunglasses are a combination of modern craftsmanship and a proven round silhouette. this makes it a perfect unisex frame that fits any face.the all-injection frame is not only beautiful, it's durable, lightweight and robust enough to take anywhere. lumalens lenses optimise visibility and colour intensity. lumalens brown lens reduced blue and green light allows for a balanced and contrasting view.