I travel extensively internationally. I’m returning these as I found they hurt my ears with the pressure of the spring and because of the audio quality when wired. These are the answer Ive been looking for for years. I typically wear a womens 8/12 or a European size 39. I’ve been wearing them all the time I’m in the house for the past 2 weeks or so and they have helped tremendously. Very pleased with these, well constructed giving a very stable shooting platform. I an fit a box of hair dye or a full size bottle of shampoo into each pocket, gave me alot more storage room and it holds a lot of weight since I have it jammed packed Money saved make the wife happy and a happy wife makes for a happy life. Unlike a couple of the others I have bought the Powertec t-track arrived unbent and unharmed from being shipped, so I am especially happy that I did not have to return this item for a replacement. The big draw is that they are wireless.