For Samsung Earbud that don't fall out use BudLoks

If your Samsung Earbud falls out of your ear, there is a solution. BudLoks™ install around the body of your earbuds. The soft silicone wing gently locks into the bowl of your ear, comfortably locking it in place during general activity or vigorous exercise. More Details
 

Samsung Earbud EO-EG920BW, 3.5mm Samsung Earbud Stereo Quality Earphones for Galaxy S6/S6 Edge/ S6 Edge+ or Other Devices - Come with Extra EAL Gels

Lightweight and comfortable, Samsung hands-free kit enables you to carry on conversations while you continue to do other things. It is the headset for listening music the way it was supposed to be listened to.
Samsung Earbud EO-EG920BW, 3.5mm Samsung Earbud Stereo Quality Earphones for Galaxy S6/S6 Edge/ S6 Edge+ or Other Devices - Come with Extra EAL Gels Available through
amazon.com
$4.58

For Samsung Earbud that don't fall out use BudLoks Earphone Sport Grips