The length was perfect for me in an 8, they felt great, but since the straps couldnt be made tighter at the clasp, these just wont work. Just buy them! I protects my case but looks sweet and fancy. -What do I like about them? Hmmm. I already had knee surgery so it would not be pleasant. It is not very durable and is very wobbly. But at 1/6 of the price, these earbuds work just great for what it is. I ordered these on Prime Day for a very deep discount. Based off of my personal usage pattern and with the following settings: out of the box default, 4-5 on screen brightness, a healthy amount of notifications from Hangouts, WhatsApp, text, Gmail, Allo etc, workouts with GPS/an exercise selected. A 12W is closer to a 10 Medium.