In-ear earbuds go into your ear canal. That way, you hear less of your surroundings and hear the bass clearly. When you choose earbuds with noise canceling, you can close yourself off from your surroundings. That way, you immersive yourself in your music. You often receive earbud tips, so you can choose the right size for the part that goes into your ear canal. That way, they are in your securely in your ear. You use in-ear earbuds well in busy places like public transport or at the office. That way, you enjoy your music in peace. It can be dangerous in traffic, because you don't hear anything of your surroundings.