"For people who wear prescription glasses, protecting and enhancing your vision throughout the day and night can be complicated—until now. Our revolutionary 3in1 FitOn System gives you three innovative lens technologies in a single, stylish platform—that fits effortlessly over your prescription. Here’s how it works. The 3in1 system begins with a strong but lightweight foundation—stylish, full frames crafted with durable TR-90. The base frame is equipped with our exclusive DigiTec technology. These clear, micro-infused lenses block blue light emissions from smart phones, tablets, computers and TVs. Less blue light means less eyestrain and fatigue—and more comfortable (and longer) screen time. It gets better. The 3in1 FitOn System includes two lightweight clips that magnetically (and effortlessly) attach to your DigiTec base frame. That means three different types of vision enhancement and protection—for any time of day or night—in one sleek package. Developed from original NASA optic technology, the dark amber of our TriLenium Polarized lenses block 99.9% of harmful UVA and UVB rays, combat side light and glare and amplify colors and clarity. Whether you’re at the beach, playing a round of golf, or just enjoying the sunshine, snap on these lenses for optimal vision protection. When the sun goes down, switch to your exclusive Night-Lite lenses. Designed for optimal clarity and definition in low-light conditions, these yellow, micro-infused lenses also block glare, making them perfect for evening games or shows, night driving or walking the dog around the neighborhood after dark. "