I bought a pair of these glasses in 2013 but after leaving them in the car every summer the plastic started to deteriorate. So I buy another pair. I think what I really like about these sunglasses is that they pack and have very dark lenses. Also, they fit my face very well. I can't say much about migraine prevention. If it helps. I'm not sure if these glasses helped. I haven't suffered from severe migraines for a few years, but have also switched to propranolol and magnesium for the long term. If they help, it's a small price to pay. I'm a bit disappointed that my previous pair melted in the sun. I think I would advise not to leave these frames in the car in the sun, especially in the summer.
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