Category: Knowledge

Sunglasses category : How to choose the darkness what suite to your activity.  Category 0 – 80%-100% transmission – for fashion, indoor use, or cloudy days Category 1 – 43%-80% transmission – low sun exposure Category 2 – 18%-43% transmission – medium sun exposure Category 3 – 8%-18% transmission – strong brightness, light reflected of water or snow Category 4 – 3%-8% transmission – intense sunshine for high mountains, glaciers; not for use when driving or on the road.  

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Certainly consumers will hear only good advantages, but never find out a hidden fact. So WHAT and HOW to CHOOSE then?

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