They're pretty damn awesome. This is my second pair and have been using for around 3 years now. Sound quality doesn't compare to some good over ear headphones, but it comes close minus a little bass. They're great for in my line of work because they last all day (10hrs or more depending on usage) and with voice answering on my phone, I can answer calls without having to touch anything if I'm covered in nasty stuff. The best part of these is that you can have music playing and maintain your situational awareness. After a short adjustment period, you can focus on the music or focus on your surroundings depending on what you need to pay attention to.

This is one of few items that I've purchased throughout life over which I haven't had a single thought of buyers remorse and I hiiiighly recommend them. There are newer models these days that are supposed to be even lighter but these weight near to nothing and are a bit cheaper.

Before buying, go on their site, and look at the sizing. There are two sizes. The Mini's sit snuggly against my head, have never fallen off and are unnoticeable in terms of comfort after a minute of wearing them.