We are very proud of the quality of our Baxter's that are put through a strict QC process before they are despatched to you and come standard with a 12 month warranty against any manufacturing defects. Our warranty includes any manufacturing defects in workmanship, materials and coatings. Manufacturing defects do not include normal wear and tear, improper cleaning, scratched/dislodged lenses, or exposure to excessive heat. Here are some tips on how to care for your Baxter's. 1/ Always store your Baxter's in their glasses case when not wearing them. 2/ Use both hands to take them off. 3/ Never place the lenses directly onto any surface as this may scratch them. 4/ Regularly clean your Baxter's with the supplied cleaning cloth. 5/ Keep your Baxter's out of direct sunlight. 6/ Never leave your Baxter's in a hot car as the heat may damage the lenses over time.