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UV Protection. When choosing a new pair of sunglasses, you should make sure that they provide 100% UV protection against both UVA and UVB rays. Otherwise, you can find yourself in a world of problems.
Check out the best sunglasses of the year, from everyday budget specs to bold designer frames. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...
Ray Ban Scuderia Ferrari. $230. Buy now . 3. Fossil Julian Rectangle Sunglasses. Offering 100 percent UV protection, Fossil’s Julian frames are a good pair of versatile sunglasses if you don’t ...
The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly proportional to the ...
Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.
A relatively new rating designation for sun protective textiles and clothing is UPF (ultraviolet protection factor), which represents the ratio of sunburn-causing UV measured without and with the protection of the fabric. For example, a fabric rated UPF 30 means that, if 30 units of UV fall on the fabric, only 1 unit will pass through to the skin.
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