Comfort wise, these are excellent. Highly recommend, super happy, thank you Dansko for getting this shoe right! I just wish it grabbed more hair in one go. This is the second one I bought and when I go to plug and play it clips it makes screeching/scratching noise I?ve never had this problem before I turn it off it screeches, I have to mute it just to kill the noise I took that measurement and compared it with the size chart and it indicated she was a size 10. By far the nicest sounding IEMs i have listened to. They fit and feel great on my head, maybe I shouldve went brand new instead of refurbished . Literally just received my pill this morning and everything looked good at first but then I noticed my box didn?t have the ?SOUNDS BIGGER THAN ITS SIZE? marking on the packaging like seemingly every other model does. Battery life is great, I normally get right around 3 days of use, turning them on for the day around 10am and off for the night around 6pm. the comfort was tremendous.