A molecular bond on Costa's plastic lenses provides the most scratch-resistant and smudge-free barrier, repelling water, oil and sweat for easier cleaning.

Bayer Abrasion Test:
A 7+ rating, which beats the industry average of 3-5

Contact Angle:
Fluids bead off the lens at an angle of 116 degrees - greater than the industry standard of 105-112 degrees

A higher contact angle keeps droplets rounder. The rounder the droplet, the easier it rolls off the lens and less likely to flatten and spread out on the lens surface The results is a smudge-free, easier-to-clean lens.