I've been using this for my Ray Ban sunglasses for over 3 years. I keep them in the car. It is holding up great. The case that came with the Ray Bans fell apart after less than a year. This is more stylish, too.
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Pros
The material is very soft but sturdy & looks to be well made. I am very pleased.
Cons
It might be too bulky to carry around in your pocket or purse