Glass frame + clip? Can be used as sunglasses?

Clamping piece is based on the frame of extension design clamping piece or set of mirrors. Often see in the street, a lot of people still wear a pair of eyeglasses sunglass clip of turn on. In the sun, as long as put sunglasses clip down obscure myopic lens, sun protection purposes. Walk in the sun, sunglasses lenses are fixed on the myopia frames, others look like wearing a pair of sunglasses. Entered the room, as long as the sunglasses lenses take off, it is a pair of myopia glasses. This is called the 'mirror', the fixed sunglasses clip style also has three, one is directly with magnet suck on each side of the frame, the other is the magnetic connection point directly to the design of frame bridge of the nose, there is also a card on the frame. And lens, in addition to ordinary sunglasses slices, another with polarized lens. Dark glasses/sunglasses clamping piece glass frame + clip? Can be used as sunglasses? Clamping piece is designed for myopia crowd polarized sunglasses, effectively prevent dazzle light, uv protection. Especially suitable for driving, outdoors, fishing and other outdoor sports. The polarized lens technology, regard as resolving power boost. Eliminate 99% of reflected light and scattered light, can make you more clear field of vision. Lens a special membrane strengthen treatment, the effective degree of wear resistance, scratch resistant, impact resistant. Sunglasses clamping piece price is quite affordable and convenient to carry, when need to wear, no need to pick, practicality is very strong.
related: sunglasses sunglasses clamping piece