High quality glasses deserve proper care. Wearing them in a protective case will protect them from environmental influences and scratches. This is particularly unpleasant for mirror glasses that are more susceptible to scratches. You should also protect them near sea saltwater. Sea water adversely affects the mirror film, it can dissolve it. Do not expose them to intense radiation (e.g. magnifying glass) or high temperatures - it can cause the distortion of frame. Therefore, we do not recommend leaving them in the car during summer days. Carry and handle them carefully, do not wear them as a headband - it can loosen the screws and bend the earpieces. Here's how to clean your glasses:
Breathing on the glasses and then cleaning will only smear dirt and smudges on the lenses.
Using a paper napkin may scratch the lens or the sunglasses protecting filter.
Moisten the lenses, the frame and the sides of the sunglasses with warm tap water.
Add a drop of soap/dishwashing liquid and gently wash the frame, lenses and sides of sunglasses with your index finger or thumb.
Rinse gently under running warm water.
Dry with a cloth.