The JBL Endurance Peak II are reasonably comfortable. They don’t go too deep into your ear, which is nice. Also, the bendable wire on the ear hook lets you adjust the headphone based on your preferences. However, they’re a bit bulky, and they can feel uncomfortable after long periods of use. Also, since you can automatically turn them off by moving the ear hook to touch the back of the headphones, listeners with small ears may accidentally turn off the headphones when trying to tighten their fit, which is inconvenient.