I've used felt sleeves on my gadgets before. They protect well against scratches and light bumps, and their "non-toxic" properties are nice too. I'm just not a fan of the pilling.
(Half-joking, but be warned: they don't stay so slick-looking for very long.)
I wanted to say the same thing. I have no idea why people would use it. In a short period of time, it starts to look like a worn out old-man's wool sweater. But I may be wrong, I've never seen the case in person to really know.
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