Some words about sunglasses lenses and frames.

PC space pieces(sunglasses lenses)

PC refers to the polycarbonate, is made of polycarbonate ring bendable and mobile bisphenol A polymerization. The molecular weight is between 20000 to 38000.The refractive index is 1.586 under the condition of 25 degrees in the test. The lenses made of this material are called "space pieces".
PC space pieces are advanced material widely used in aerospace equipment, and now it is the world's most impact resistant lenses. PC space lens can prevent lens fragmentation harm to people, make the wear safer. It is also the thinnest lens in the world, which is easier and more comfortable to wear, and 100% anti-ultraviolet.
Characteristic:
1. The world's thinnest lenses. The PC lens is 57% lighter than glass lenses, 37% lighter and 26% thinner than the traditional resin sheet. The thickness is equal to the CR-39 lens which the refractive index is 1.6. It can greatly reduce the load of the bridge, so you will really experience the relaxing activities of the world wearing it.
2. The world's most resistant to the impact lenses. The material of PC is first applied to the space shuttle window and bulletproof glass in both fields, its resistance to impact is 60 times of the resistance of glass lens, and 10 times of the ordinary safety than the resin sheet. It will safely care your eyes from the outside hurt.
3. The PC lenses are 100% anti-ultraviolet (UV400), which means against the vital harmful light in the sunlight to protect your eyes.

TR-90 Technology(sunglasses frame)

TR-90 (plastic titanium) is the world's most popular ultralight frame material. It is comfortable when wearing, resistant to high strength impact, and non-deformation.
Characteristics:
1. Super wayward deformation: TR-90 (super tough resin frame memory materials).
2. Light texture: Protect the face from being damaged when the frame is broken during the movement, special memory function, anti-deformation index reached 620Kg/CM.
3. Impact resistance: It is two times more effective of relieving external force impact than acetic acid fiber plastic (CA).
4. High temperature resistant: suitable for all kinds of climate and environment, resistant to the high temperature of 350 degrees in the short time, and it is not easy to melt and burn.
5. Hook anti-falling foot sleeve: soft rubber hook-shaped foot sleeve, which can prevent the glasses from falling off in the intense movement, and humanized design thinking to ensure comfort and safety.
UV-BANS sunglasses selected almost PC lenses and TR-90 frame for the typical product, and help you find the best sunglasses today! {{widget type="catalog/product_widget_link" anchor_text="SPIRIT-Y TAC Polarized TR&metal Unisex Classical Aviator Sunglasses" title="SPIRIT-Y TAC Polarized TR&metal Unisex Classical Aviator Sunglasses" template="catalog/product/widget/link/link_block.phtml" id_path="product/25"}}