When headphones the label 'best tested', the headphones received an award. These awards are presented by the Consumentenbond, Kieskeurig, What Hifi, and EISA. Noise canceling dampens ambient noise and noise. It's useful in public transport, such as in a busy train compartment or on the plane. This way, you focus on the music and don't have to worry about what is happening around you. Because these headphones are best tested, you know that the noise canceling works well.