I wear a 6 1/2 to 7 size, so I always choose 7 when ordering online and these fit me perfectly as you can see! i likevthem, they are comfortable and definitely leather but they shed lol leather all over u. I put it on multiple times before I found you need to start by aligning it with the click button first. Its made it so we can woods ride 24/7Ive tried multiple battery combinations and all work on these even a 9v lol but the best I have came up with so far is RC car batteries 3300 mah 7. i was expecting a bit better since it a known brand. Im really enjoying using these earbuds. These are good eartips replacement if you care about the value. Contacted the seller and was advise to do what i was already doing. I highly recommend and hope that I can get another pair soon in other colors. Good protection.