Customers will enjoy a 12-month warranty (12 months after receiving the products ), covering any possible defect in materials and workmanship. This warranty does not cover damage caused by accidents, negligence, or improper care. For dislike, size issue, uncomfortable prescription, please contact Sllac Customer Service within 30 days after receiving the products. Otherwise, issues will not be accepted for more than 60 days. For detail please check https://www.sllac.com/help/return-policy