SNUG FIT AND STAY PUT IN YOUR EARS THROUGHOUT WORKOUT - Special designed profile of ROVKING workout earbuds fits snugly into your ear canals. Over the ear design makes the workout headphones keep secure fit. All makes these sport earbuds won't fall out of ears during most active sports. Great sports earbuds for running, jogging, gym, working out, exercising, walking and dancing. They are sweat proof headphones that will still keep stay in place during sweaty workouts. LIGHTWEIGHT AND COMFORTABLE FIT - Optimized nozzle angle is designed to ensure comfortbale wearing in the ears. These exercise earbuds are 16g lightweight with soft wire wrapped around the ears. They are comfortble fit even after longtime workout. You can even wear these earphones to sleep in and don't notice much they are in your ears. NOISE ISOLATING AND GREAT SOUND - The cable wires offer high quality audio signal transmission which ensures outstanding sound quality. The sound comes out clear, loud and with bass. They are also noise isolating eabuds that can block outside noise. You can listen to your music and phonecall clearly even in noisy environments like gym, fitness walk, subway/bus commute and flight trip.

Comes with 3 sizes for a near-custom fit. Works with iPhone 3/4 and ear-canal style earphones. Comfortably locks earbuds in place during general activity or vigorous exercise.