Though these may not be “truly” wireless (they have the cord between the two buds), but they are hardly noticeable. The cord between them is fabric, so it appears less restrictive than the rubbery covering many standard headphone cords have. They are super lightweight and they fit me right out of the box (though they do come with other Sport Flex Fit Ear Tip sizes). I utilized these both at the gym and on runs, and experienced no discomfort, nor did they fall out when shaking my head from side to side (as a test, not because I actually run that way!).  They do stick out of the ears a little further than a typical in-ear bud, but I’m chalking this up to JBL needing a tiny bit more space to provide some solid audio quality.