Amazing. Literally the earbuds that I didn't know I needed until I tried a pair on. Almost anti noise-cancelling, as they welcome in all the sounds that surround you, but for me are better for that. I no longer need to worry that I'm missing important sounds, like car horns, or bicycle bells while crossing roads or that I'm missing important conversations as I'm listening to music instead. Now, I can do both at the same time.
While, I wouldn't say these will replace your earbuds, as sometimes you want to be cocooned away from such things - but these are for the moments when you don't want that - and, like me - you might find yourself using them far, far more than you expect because of that.