Swim goggles are designed with 180 degree peripheral lenses that are coated with the latest anti-fog treatment to have extended peripheral vision without distortion. The anti-fog prevents water from condensing in the form of small droplets on a surface that looks like fog, ensuring clear vision above and under water. The food-grade silicone material gives you the best wearing experience and protects sensitive skin. Ergonomic frame design conforms to your unique facial contours. The inside of the lens has been treated with an anti-fog treatment, giving you the clearest vision underwater. After each use, leave the goggles in a ventilated place. Always keep your clean goggles for longer life. Adjust goggles before entering the pool. It is recommended that teachers, coaches or experienced swimmers demonstrate the method of adjustment, fitting and removal of goggles before first use. Box contents: 1 pair of swimming goggles.