They were a little difficult to put on my sunglasses but it's good. If they were easy to put on, they would also be easy to take off. Once they're on, they're on! A pair of sunglasses I was wearing broke (I accidentally leaned on them while they were in my backpack) and it was a little difficult to put on and take off new ones, but then again that's good. They are comfortable and I know my sunglasses will stay on my head!
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