I don't know why the seller suddenly decided to give me a refund before they arrived. They came, they work great, and I love them. It's a lot easier to go to sleep with these on than others I've tried that were said to be for sleep. But I wouldn't recommend any regular earbuds for sleep. I'm afraid the flat in-ear design is best for side sleepers... I'm also surprised at how good the sound quality is, better than I expected from cheap foreign stuff.The cons would be that things can start to sound fuzzy at low volumes, I mean, it's like there's moments where the signal may not be so perfect. But it's still rare enough. And apparently, the charger doesn't like a fast charging cord, the instructions say so. And I don't think a completely painless set of sleep earbuds exists yet, I'm just saying that these are the closest thing so far. Rarely, I do still feel a little bruised by them. But it's mostly painless when I find the beast position for both the buds and my head on the pillow. I might not have any pain left after I get used to them enough.