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Each pair of glasses enjoys 30 days fit & use guarantee and 2 years warranty.

• 30 days fit & use guarantee: You can ask for a return for a one-time same value replacement or a refund within 30 days of order fulfilment, if the glasses doesn't fit you well or not wearable on its material.
• 2 years warranty: Customers are eligible for one-time replacement during this warranty time (within 2 years of order fulfilment). A replacement will only be issued if there are clear defects in material or workmanship. A man-made defect or material fatigue due to long-time or incorrect use cannot issue a replacement.