Costa APALACH 6S2011 Sunglasses

• Polycarbonate is the standard for most sunglasses.

• Trivex is an upgraded material with better visual acuity, more impact resistance, and chemical resistance.

• High Index is recommended for higher prescriptions as it is the thinnest, lightest material.

The bluDEFENSE Lens feature blue-light control technology built into the lens monomer. This lets beneficial blue-turquoise light pass through the lens while filtering harmful blue-violet light blocking 100 percent of harmful blue light at 420 nanometers.

Your sunglasses can have a mirror coating that reflects light making the lenses darker. You will see the opposite color of what is being reflected in the mirror that others are seeing. For example, a green mirror will have a red hue as you are looking out since the mirror is reflecting the green light.