1. Material: Must have superior anti-impact function, preferably using PC, polypropionate, etc. with good toughness as material.
2. Color: The frame color is not recommended to be too bright, otherwise it will affect the vision, especially in the movements that require a higher response, it is easy to produce illusions.
3. Anti-fog: Ventilation effect is better, to avoid all factors that may cause lens fogging.
4. Security: The frame must be corrosion-resistant, anti-fall, not aging, parts do not fall off and other functions;
The elastic band has good elasticity and strong toughness. It can be worn for a long time without slackness and it is not easy to slide off. It is easy to change and easy to clean.
5. Design: Ergonomics, high comfort, wide field of vision; significant shock absorption features, such as adding a silicone layer in the frame, soft rubber and other side impact cushioning measures.
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