How to choose a pair of good running the sun glasses
When buying a pair of sun glasses is the most important factors to ensure that they provide full protection against UVA and UVB radiation. If you will be in the running or walking long time wearing sunglasses, out of a sweat, then you also need to consider a comfortable fit, anti-fog and lens colors. Recommended reading: winter sports especially now running perfect glasses glasses slippery with nose pad, super lightweight frame, adjustable features interchangeable lenses and elaborate design, to ensure that the ventilation and prevent mist. Lens color: if you will be running in different circumstances, so you need to consider buying have interchangeable or polarized lens sunglasses to meet all your needs. Black, blue/grey/green/brown for a fair of the sun is shining, make the eye under the dazzling sunlight is most comfortable. : golden yellow, golden and amber is suitable for low light conditions, they filter blue light and is easy to see the bumps and border on the ground. Polarization/color: color lenses very suitable for very bright, because they undermine the reflection on the salt flats and sand dazzling sunshine. The basis of their color more than general lens, however, as the end of the day they may become too dark and cannot be used, because the shadow getting longer. Mirror lens: through to the ground reflect sunlight to reduce the dazzling light, in order to increase the effectiveness of tinted lenses. Transparency: in the case of darkness or windy, when you want to prevent your eyes tears when running. UV proof: you should buy at the same time provide protection against UVA and UVB radiation of the sun glasses. Too much in a short period of time can cause, exposed to UV light keratitis, basically is the eye of sunburn. Prolonged exposure to UV light can cause permanent damage, so make sure that your sun glasses to provide comprehensive protection. This is especially important in the desert or salt flats, where the sun will be reflected from the ground like irradiation in the snow. Ventilation: in damp and rain or you may be covered in sweat, you want to choose to provide good ventilation frames in order to avoid misty couldn't see. Choose to stay away from the face of the lens series, air can circulate freely, but also consider anti-fog coating. Material: if you are playing sports, make sure your best lens is made, the fracture resistance materials such as polycarbonate rather than the traditional glass or plastic. Also consider the material of frame - — The more flexible, the more can't be broken, such as lost time or run into a full pack good backpack. Fit: also consider wearing sunglasses for a long time and comfortable fit, do you want a lightweight, might contain rubber coated nose and ears adjustable keep glasses when running in situ. 吗? 吗?