Aspex Eyewear's EasyClip technology features stylish eyeglasses and sunglasses for men and women of all ages with removable polarized lenses that go on and off with one easy click. This patented technology utilizes only rare-earth neodymium magnets that have ten times the magnetic attraction of standard ferrous magnets, allowing your EasyClip attachment to remain securely in place. No other eyeglass attachment combines adaptability, practicality, durability and style like EasyClip. It's the perfect alternative to transition lenses that are not car-friendly since the windshield blocks the UV rays that are necessary to initiate the lens's darkening mechanism.