Finally found the size that fitted out of the selection available in the pack. They do stay in while I'm walking, but sometimes slip out if I do more vigorous exercise. Moderately good sound quality.

When I first put these on I had to mix and match the earpieces in order for them to not fall out When jogging I found that the larger sized ones best Sound not the best but the free to download app let's you to set sound profiles to increase your listening pleasure Bluetooth connectivity on these...

Good earphones, bass is good for this type of earphones

I've been very happy with my pair of jaybird headphones, some of the larger ear peices were way to big for my eyes, and the standard sized ones are fairly big too. Other then that. They are awesome headphones. I won't go a day without wearing them.

Great sound from the earbuds, however I have large ears and the fins do not fit me properly. They either fall out or dig into my ears. I tried to use other ear-tips but because the earbuds are metal they are too heavy and fall out.