SonicSport In-ear Headphones Yellow. Take outstanding audio for a run. With interchangeable secure fit earpieces, the ATH-SPORT2 SonicSport in-ear headphones are designed to stay in place while jogging, working out or engaging in other sporting activities. The S/M/L earpieces are ergonomically constructed to mirror the hollow of the ear and provide a secure, comfortable fit. Plus, since the headphones don’t wrap around the outer ear, they are perfect for those who also like to wear sunglasses while working out.