I purchased this product in August 2017 and in January 2018 the plastic on the screws broke. I only wore glasses while working on the computer. I emailed the company asking if this is normal and what their warranty policy is. The company never answered me. So I can try to get my glasses sealed or buy new ones but I will not buy any more glasses from Gunnar. For the price I think it will last more than 5 months. I am sorry.
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