Product works great. I live in Wisconsin so I only have to wear the Costa a few months a year compared to when I lived in the Gulf. So I'm not wearing out as fast as I used to, it seems like I've held up really well over the last year. Much better than Cwire, which didn't relax at all. However, my only problem is that I am a woman and I have long hair. I wanted an all black keeper and minimal flash as wearing glasses around the neck is not that trendy here and I just look like an old lady doing her own thing. These were the only Costa branded holders that were plain and solid black that I could find. The other one I'm going to buy, Fathom, only has hinges, so I doubt its holding capacity. So I tried this style. And it's not easy, just putting a belt over my head, pulling my hair over it so it doesn't get caught in my hair, and when I wear too many coats in the winter, there's such friction when I turn my head during driving. this will lift my sunglasses off my head a bit. With bulky clothing (which isn't a problem on the beach) or with hair below the nape of the neck, they don't allow enough movement.
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