There are many factors to consider when choosing swimming goggles

　　Many people pay attention to anti-fog when buying swimming goggles. In fact, the anti-fog validity period of new swimming goggles is usually 3 months. After 3 months, anti-fog coating needs to be applied.

　　The suction power of the glasses gasket should be moderate, not as tight as possible. Currently, swimming goggles on the market are mainly made of rubber, silicone, etc. Rubber is the most traditional material. It is hard, easy to age, and cheap; silicone products are suitable for skin Harmless, suitable for people with allergies, and strong anti-aging properties.

　　When testing the waterproof performance, first turn the mirror side down and press the swimming goggles on Eye on the lens, feel the suction of the gasket, and at the same time gently press the lens to expel the air in the lens. If the suction is moderate, it means that the waterproofing is OK.

　　Of course, the waterproof performance will vary slightly depending on the shape of the face, so be sure to try it yourself when purchasing. The softness and hardness of the gasket should be moderate. If it is too hard, it will cause eye bone pain. If it is too soft, it will cause excessive intraocular pressure, which will affect its use.