The Apple AirPods 2nd Gen are very good for sports. Their one-size-fits-all design is fairly comfortable, but it isn’t the most stable for everyone. How they fit greatly depends on the size and shape of your ear. Their open-back design is suitable for people who run or work out outside and want to be aware of their surroundings but won't help those who want to block out the noise of a crowded gym. Also, unfortunately, they don’t have a great control scheme, so it's not easy to adjust your playlist or volume when you're on the move.