Made from lightweight and flexible TR90, Joel 2 in 1 stylish lightweight magnetic clip-on eyeglasses are perfectly on trend for most of men. One pair of magnetic clip-on glasses have one prescription lenses and one polarized sunglasses, switch between sunglasses and eyeglasses in one second, more convenient, comfortable and affordable than ordinary eyewear and sunglasses. Single vision blue light blocker lens and progressive lens are avaliable.