Breakline BerthaBREAKLINE BERTHA Just like its name evokes, the Bertha is Breaklines biggest and baddest frame in the lineup. The oversized temples and large face block out all unwanted light leakage allowing your to focus on what matters. Cast Molded, duraclear polarized trivex lenses with fog inhibiting technology, anti reflective coatings and a z87. 1 impact rating deliver crisp, strain free vision built for all day wear. Lighter and stronger than polycarbonate,