Global vision lenses are crafted from shatterproof polycarbonate, and decentered to provide maximum clarity and peripheral vision. All lenses offer UV400 protection and a scratch resistant coating. They Filter out both UVA and UVB rays with wavelengths up to 400 nanometers, offering protection from 99 to 100 percent of harmful light. It is also our continued goal to provide our customers with cutting-edge technology that goes above and beyond UV protection. These innovations in both lens and frame construction ensure that the user has a multitude of options in selecting the right eyewear. Global Vision Eyewear products are covered by a one-year replacement **against manufacturer defects under normal use. Scratches are considered normal wear by industry standards and are not covered under this warranty.