Cheap plastic. I was surprised on the quality of it and it was delivered a lot quicker than it was supposed to which was great 
688864gaaa12086 not sure what a fix would be, maybe a different compound of material that is stickier on the inside? I wore them on a road trip -- driving 700 +miles a day. 
688864gaaa12086 There are so many headphones out there. 
688864gaaa12086 The ear cups are comfortable. The Acer team does not even know that youre supposed to download the app, so asking them wont really be much of help. These headphones have made it so easy to stream from home. 
688864gaaa12086 For $20 I was really disappointed with these. These keep your feet warm and look like they will be around in my closest for a few years.
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