HEADrang was designed and manufactured by computer simulation under systematic and integrated management taking into account of stability and facial balance.

Accordingly, its structure prevents the force to be applied unilaterally to one side only, and do not cause pain thanks to the elaborate research and production to keep the applied pressure

by HEADrang less than the pressure by the average weight of human head while sleeping.

Additionally, HEADrang minimizes the disruption of the blood circulation.

Therefore, it does not have any side effects.

HEADrang is a reliable product to check and control the stability through consumer product testing.

If you feel discomfort during wear, please familiarize yourself with the correct wearing method. Check the slope (about 45 degrees) and position (when narrow-cheekbone; wide-chin under the ear) of the P-plate (pressure plate) and adjust the Chin band before operation.

※ Click the size wear method under the category of the product introduction on our HEADrang homepage in order to play the usage video. Right method of HEADrang wear will ensure the calibration effect free from any side effects.