I have had these for a few months now - long enough to have an informed opinion. With the medium size tips they fit pretty good. An 8 out of 10 I would say. If I wear them while working out they can become loose in my ear but I didn't buy them for working out. These were purchased for every day, mostly at home use. They are at a great price point for the quality you get. I wasn't looking for noise canceling in these so there's no loss for me there. The ability to hear ambient noise is a plus for me as there are things going on around me that I need to hear. The sound quality is very good, again considering the price. They are comfortable enough that I fall asleep with them in. Being able to use only one bud is important to me and being able to use either the left or right matters as well and those options are covered. These are, overall, a good sounding, good fitting, affordable pair of truly wireless blue tooth earbuds. I am sold on Sony's quality. I will be trying a pair if their most expensive earbuds next and expect that I will be even more impressed with those.