swimming goggles using high quality imported PC and silicone materials and imported UV stable materials. anti-shatter, anti-fog, anti-UV : Mirrored and anti-fog lenses filters out powerful rays of light to enhance sight clarity, UV protection makes it nice in the bright sun outdoors. Ideal for use in outdoor swimming or competitions.The earplugs are attached to protect swimmers' ears, a fixed design，and you will never lose them. Ergonomic completely sealed silicone protective circle design prevent water from entering your goggles ,and help to reduce the pressure around the eyes, keep your eyes dry and comfortable.The headband is made of 100% soft and elastic silicon,comfortable to wear,as well as prevent eyeglass slipping during swimming. Adjustable headband offers different size options to Fit Any Size. Very easy and handy to use to adjust the strap. It's also adjustable at different angles to fit your head size.