What causes such a price difference? Does the high price is caused only well-known name of the designer? What is the secret hidden behind a small object that often give the wearer a sense of mystery this?

The main purpose of the use of sunglasses is to protect the health of the eye. Sunglasses are both generally have layers of anti-reflection coating (anti-reflective) that is attached under the lens or polarized sunglasses (polarizer is applied on the surface of the lens) and equipped with a protective coating and anti-scratch coating mirrors to reflect back light waves near the eye.

Sunglasses that we now know is not necessarily black. These colourful glasses do not reduce performance in protecting our eyes. Photo chromic technology allows the use of bright colours with a material that automatically switches to black when exposed to excessive light. Photo chromic material that is not a color (transparent) when used in the room (no wave ultraviolet). But once exposed to ultraviolet light waves, chemical reactions that change the structure so as to absorb some visible light waves. This is what causes the colour to darken. This process can happen very quickly, and the reaction can be reversed again (when the wave ultraviolet no longer, automatically changing its original structure) with the same speed. Silver halide such as silver chloride is one example of photo chromic materials

All of this advanced technology hidden behind high-quality sunglasses. This is what causes the difference in price with sunglasses that only sells black colour only but can not provide the protection required by our eyes. You can see some clips on sunglasses, so you can choose the appropriate Sunglasses. You can choose Flip-up Clip-On or Spring-fit Clip-On.

Wearing sunglasses or dark glasses can indeed add value to one’s appearance. But you need to remember what the real benefits of sunglasses: protecting eyes from the glow of dazzling sunlight. Therefore, must not choose sunglasses that looks cool. Make sure the lenses can withstand UV rays perfectly, and color suitable for the weather. So what else is good condition glasses?

1. Priority protection. Choose sunglasses that were able to hold information 100 percent of UV rays.
2. Choose a good color. Grayish color reduces glare without changing color too much, while the amber color (yellowish orange) suitable for the weather was not too bright. If you like water sports or golf, red glasses will provide a sharper contrast between the green and blue.
3. Purchase wisely. Sunglasses are not expensive also can provide the same protection designer sunglasses. But sunglasses are sold at the curb must also less able to provide the protection you need.
4. Know Your minus size. Minus-eyed you can order sunglasses with the lenses adjusted. Namu you need to remember, not all optical lens capable of providing or oversized aviator models with minus eye conditions.
5. Do not be too heavy. Frame with titanium alloy is the lightest option and the most durable, while the plastic frame is in second place.
6. Ensure fit with the structure of the face. Lean forward to see whether the glasses slid, sliding, or too narrow.
7. Customize with color. Brown tortoise shell or spices work best for skin tones that tend to dark, while the lighter skin better wear black or dark blue.
8. Look for sporty style. Sporty-style glasses is more robust and flexible. Often a sporty sunglasses are also designed with features such as anti-fog lenses, temples with non-slip grip, making it ideal for all outdoor activities.
9. Protect yourself with the maximum. If the eyes are no longer narrowed because of glare, wrinkles in the forehead can also be reduced. Protect the skin around your eyes with a lens that can cover the area completely.
10. Have a few pairs. Collection of several pairs of sunglasses to fit your mood on a given day. Select aviator like Angelina Jolie wearing, oversized who became his signature style Mary-Kate Olsen, or wrap-around style of Nicole Richie.