1. Do not wash with soap. Use a special eyeglass cleaning fluid.

2. If it comes into contact with water, dry it immediately. So that metal parts do not rust easily.

3. Take off the glasses with two hands or hold the bridge in the middle with one hand.

4. Clean the lenses regularly using a special cleaning cloth (micro fiber)

5. If traveling in the rainy season, bring a hard case for glasses.

6. For more comfort, upgrade to fog-resistant lenses, Optifog