All Filter Optix glasses come with a two (2) year warranty, effective from the date of purchase, against manufacturing defects. The warranty covers defects in materials, workmanship, coatings, or lens colour within the warranty coverage period.Please note that the warranty does not cover the following:- Normal wear and tear, including scratches  - Damage, defects or breakage caused by accidents, alterations, improper use, and careless maintenance  - Exposure to excessive heat, or extended time in the heat (e.g., using them in the sauna, or leaving your glasses in the car or in direct sunlight)- Lost or stolen glassesFor warranty issues please contact us at support@filteroptix.com, within the warranty period and as soon as possible after you discover any defects on your Filter Optix products. You will then be entitled to a refund.