I purchased these as a gift for a friend and he could not stop talking about them, so I had to take a listen for myself! The design in itself was what I liked, but the sound quality is also amazing! These never fall out of my ears when I'm doing cardio. Also, these are the first pair of headphones that actually fit my ears, as the modern design is engineered to fit your ear a bit differently than regular earbuds. My new favs.