Comfortable to wear. No falling out. It's the result that counts: And when you have the perfect headphones, nothing stands between you and your workout. Thanks to the FlipHookTM design, you can choose whether you want to wear the headphones in or behind your ear. The comfortable combination of FlexSoft ear tips and TwistLock technology ensures that these headphones fit comfortably and don't fall out. And a little sweat or rain won't spoil the fun of training with your Run 2. With IPX5 sweat resistance, the JBL Endurance Run 2 headphones always keep up, while the built-in microphone and remote mean you don't have to search your pocket to take calls. Designed to withstand your intense workout regime indoors or outdoors and in any weather thanks to the IPX5 rating.