UV rays are ubiquitous and harmful to the eyes. Most people will buy sunglasses to protect their eyes. In fact, children need to wear sunglasses to protect their eyes more than adults. This metal Classic Xpi Kids Sunglasses K0909M-4 has super excellent uv400 UV protection lenses for better eye protection. The style is classic and fashionable, and your children will look like cool fashionistas. The colorful mercury lenses look cool.