Easy to fit, great sound experience : - Protected and still being able to communicate and hear the surroundings - High end memory foam provides a perfect fit for everyone - Acoustic filters are 100% acoustically tested - Natural sound and ventilation of the ear because of wide filter aperture with sound damping mesh - Minimum occlusion - SNR 19dB - Made in The Netherlands 20dB version designed for situations such as rock concerts, rehearsals, training where volume is important.