Sunglasses have the same size as the frame and are designed and produced according to standard specifications. The size parameters of the sunglasses are marked on the mirror legs, nose bridge, or label for reference and selection.

Check the data of the glasses frames currently being worn (usually marked on the inner side of the mirror legs) or if the glasses frame being worn cannot see these data, you can use a ruler to measure and obtain data for comparison; Try it on at a glasses store and note down the size that suits you; Measure the approximate distance between the temples with a ruler, and then refer to the inner width of the glasses frames. Usually, the suitable value for the inner width of the eyeglass frame can be the same or 3mm larger than the temple value.

Cleaning of lenses. In daily life, attention should be paid to the cleaning of sunglasses. If necessary, we can use professional cleaning agents or water to rinse. After cleaning, use a clean tissue to gently press and suck until the water droplets dry. It is best not to use hands or nails to remove stains on the lenses. Special attention: Glasses with polarized lenses should not be cleaned with ultrasound, otherwise it will damage the polarization effect.

Avoid contact with items containing chemical components. For example, things containing chemical ingredients such as perfume and pesticides can avoid chemical corrosion on the lens and frame, so as to better protect sunglasses.