1.Ultraclear antifog lenses for a wider field of vision. Professional antifog coating is used to make the lenses durable and antifog and ensure a clear field of vision in the water. High permeability lenses reduce refraction and distortion and provide an unparalleled visual experience, whether in the swimming pool or in open water. 2. UV protection to reduce glare interference. The special UV protective coating effectively blocks UV rays and prevents sunlight and strong light from irritating the eyes, so you can enjoy a more comfortable experience when swimming outdoors. 3.Soft silicone seal, comfortable to wear without water leakage. The highly elastic silicone seal adapts to the eye contour to form a strong seal to prevent water from entering. The skinfriendly material is lightweight and soft, and it is not oppressive to wear it for a long time. It is suitable for adults and teenagers and brings unparalleled comfort. 4.Adjustable double strap design, stable fit without slipping. Ergonomic double strap design, precise fit for different head shapes. Simply adjust the tightness to ensure a secure fit, and it does not slip off easily even when swimming or diving.