Alpine Music Safe Pro, Black Edition, 2-pcs Gill-System in medical Material for perfect Fit and highest Usingcomfort, 3 changable Filters in Gold Filter: 16,0 dB (500 Hz), Silver Filter: 15,7 dB (500 Hz), White Filter: 14,3 dB (500 Hz), no Ear Pressure Inside or Outside of the Ears, easy clean up