UV400, 100% UVA and UVB for your eye protection. EYE HEALTH - Bifocal sunglasses help you preserve your eye health by reducing eye strain and fatigue. COST SAVINGS - Because you'll no longer need multiple pairs of glasses, bifocal sunglasses save you money. EASE OF USE - Bifocal sunglasses are convenient. It's just that simple. No longer will you need to carry multiple pairs of glasses around with you. Polycarbonate shatterproof lenses with light weight durable frames keeps your eyes safe and relaxed throughout the day.