FL2 Micro-Rail SystemWhen you are outdoors, you need the best gear. Your eyes are no different. Great sunglasses enhance your ability to perform at your best, but too often, when you are not wearing your sunglasses, they get lost or damaged. Popticals has solved that with our patented design. Popticals provide industry leading optics when you need them and are safe in the case when you don’t.At the heart of each pair of Popticals is our patented design utilizing the FL2 Micro-Rail System. The rail system allows the lenses to slide parallel to each other or “spoon” for portable storage and ultimate protection. The glasses can quickly and easily slide back into high performance premium sunglasses. Patented FL2 Micro-Rail System: Allows the sunglasses to compact down to a small size, keeping them safe from damage in their custom caseNew Technology: Innovative system allows lenses to slide together for compact storageQuick & Effortless Connection: Powerful magnet guides the connecting pieces in the center of the frameDurability: Corrosion and rust proof materials featuring stainless steel linkages ensure long lasting functionalityLearn more about the FL2 Micro-Rail System