1. They are small, almost unnoticeable (some of them hurt my ears after about 30min, these don’t). 2. They never pause/cut out, even with the iPod in my pocket and on the motorcycle. 3. They are very secure. Basketball, working the heavy bag, jumping rope, it doesn’t matter. They never come loose or even shake. 4. Sound quality is amazing, especially after playing with the equalizer app. 5. Battery lasts a long time, and the cool carrying case holds several hours of charge in it. Some of those individual characteristics apply to other brands also, but the Jabs are the total package.