1. Choose the material
At present, swimming goggles are divided into three materials: rubber, fine glue and rubber. Among them, rubber is the most traditional. In comparison, the material is hard and easy to age, but the price is cheaper. Fine glue is relatively soft. Adhesive products are highly praised by manufacturers, because this material has strong softness, good airtightness, density can float on the water surface, at the same time, it can decompose on its own, without pollution to the environment. This new type of environmentally friendly material does not damage the skin and is suitable for allergic people. The brands that use enamel on the market now include "Youyang" and so on.
2. Pay attention to water resistance
Each person's face is different, you need to try the selected swimming goggle yourself. The specific method is to face down, press the swimming goggles on the eyes, and feel whether the gasket has suction power. Considering the pressure in the water, the suction power at this time should be comfortable and appropriate.
3. Observe the clarity and transmittance of the mirror
The goggles using the first raw material have the best clarity. The general price is also more expensive.
4. Anti-fog performance
Because the water around the swimming goggles is cooler, the air inside the swimming goggles tends to condense into water on the inner wall of the swimming goggles, thereby fogging. Swimming goggles with good anti-fog performance, high-tech "eating mist" technology has strong hydrophilicity, can absorb water vapor to form a water film, so that the water vapor cannot attach to the lens to form fog. Moreover, the anti-fog life of "eating mist" is long, and it is not easy to melt in water or chemicals.
The design of swimming goggles should follow the principles of ergonomics and conform to the anatomical structure around the human face, head and eyes. At present, the relatively popular swimming goggles in the world are relatively small, because Westerners' eyes sockets are deeply sunk, and small glasses are just embedded in the eye sockets, which is more suitable for Westerners' facial features. Orientals generally have relatively flat faces, so choosing a slightly larger swimming goggles would be more comfortable. The nose bridge and headband of general swimming goggles can be easily adjusted to suit everyone's needs.