sportear inear x pro horevaernThe earmuffs earplugs here are simply inserted into the ears in the most comfortable way they generally fit incredibly well on people! When they are in, you just press the red button to open the valve and you can hear clearly and naturally, almost as if you didn't have them in. WHEN the loud noises come, the valve will automatically close and the loud noises will be kept out. Alternatively, you can avoid tampering with the valve at all for the best