These men’s sporty sunglasses boast sporty round frames with the Carbon Fiber technology – Carrera’s latest These men’s sporty sunglasses boast sporty round frames with the Carbon Fiber technology – Carrera’s latest innovation. Equal parts refined and practical, the sleek oval silhouette is given a slightly tougher edge with the double nose bridge and the Carbon Fiber arms, traced on the inside with soft rubber for a non-slip fit. The polyamide-injected front is outlined with acetate for textural contrast and fitted with fully UV-protective lenses, available in a wide range of finishes, including the polarized variety.. Equal parts refined and practical, the sleek oval silhouette is given a slightly tougher edge with the double nose bridge and the Carbon Fiber arms, traced on the inside with soft rubber for a non-slip fit. The polyamide-injected front is outlined with acetate for textural contrast and fitted with fully UV-protective lenses, available in a wide range of finishes, including the polarized variety.