Here are some ways to check if china sunglasses men offer UV protection:

Look for labels

Check the label or packaging to see if the sunglasses offer 100% UV protection or block at least 99% of UVA and UVB rays.

Check for a sticker

Some sunglasses come with a sticker that indicates the level of UV protection. Look for a sticker that says “UV 400” or “100% UV protection.”

Visit an optometrist: An optometrist can use a special instrument called a spectrophotometer to measure the amount of UV radiation that passes through your sunglasses. This can help determine the level of UV protection.

Use a UV light

Place your sunglasses under a UV light and check for fluorescence. If the lenses glow brightly, it indicates that they are blocking UV radiation.

Use an online tool

Some online tools allow you to check the level of UV protection of your sunglasses by entering the brand and model information.

By using these methods to check for UV protection, you can ensure that your sunglasses provide the necessary protection for your eyes and maintain good eye health.