Children from 8 to 9 years old are developing a filter that blocks UV rays. Despite the fact that most of the UV rays that are exposed to a lifetime of life, people are under the age of 18. It is said that ultraviolet rays will affect the eye and immune function of your skin or eye color. UV protection from childhood is important to prevent skin cancers and cataracts in order to protect against harmful UV rays. Uses categories: 3 lenses (AS/NZS1067) in 5 levels of 0 to 4. Category 3 is the second on the top, with a highly effective UV blocking effect; The only band type sunglasses approved by the Australian Cancer Council. Note: Please do not look directly at the sun or strong light when wearing sunglasses. There is a risk of injury to the eyes. These sunglasses are for kids. Not a toy. Please be sure to use under adult supervision when using. If you experience any abnormalities such as itching, rashes, or eczema in the areas that touch your skin, stop using it immediately and seek medical diagnosis. Cannot be used as protective glasses for impact resistance. Please do not use if there is a risk of violent impact. There is a risk of cracking lenses and injury.