Cons:- Builds are important for higher difficulties and it can take some getting used to when it comes to learning the systems. My feet have always been borderline wide width, but now that Im expecting, they have finally gone to true wide in my 3rd trimester. 1 doesnt work without installing the aforementioned spywearWithout installing the spywear you left with 1 left 1 right spear pointing at the top of your eardrum so it sounds like everything is coming from the skyThe pivot for the mic doesnt have a hing, or a protective durable rubber bendy thing. The links that attach the rubber sleeves are really thin and I don?t see them lasting very long. I can smell them when I am sitting down with them on. They are going to look great with 98% of my summer stuffTo revise my review I bought a size 5. Quality control wasnt all there as some parts are welded just slightly off. I?m sure if I actually read product details it would say that, but I tend to shop off the images more, my bad. So comfortable I love them. I had the volume fairly low most of the time though (I didnt want to annoy those close by) & that was also a great sound, not tinny sounding like some can at low volume & certainly a better sound that what my iPhone 6S can put out.