These navigator sunglasses have a double bridge. the signature detail of Carrera. They're enviable for their lightweight versatility. The stainless steel front can be fitted with prescription lenses. The temples are also in metal. rendered even more comfortable thanks to the acetate end tips. The entire look is defined by slender lines. yet these frames are durable enough to stand up to everyday use. The sun lenses ensure crisp vision. even more highly performing in the polarized and ultra-polar versions.