RELIEVE TIRED EYES - Do you have trouble sleeping after working on the computer or watching tv? By wearing Swannies blue blocker glasses while working or gaming you'll experience less eye strain, headaches, and protect your eyes from harmful blue light. You'll have better sleep too! BPA FREE - Our luxury frames are made of an environmentally-friendly alternative to petroleum-bases plastics. Strong, lightweight and flexible, can be shaped to your face for a perfect fit and be readjusted. Our frames and prescription quality lenses are free of harmful BPA. CLASSIC LOOK - Swannies are designed not only for function but for comfort, clarity and fashion. It's the best of all worlds!