Video: 【34dB SNR SOUND TECHNOLOGY】Designed with 2 layers of professional noise dampening foam, high sealing solid cup and the unique double-shell, Mpow Ear Defenders offer SNR 34dB / NRR 28dB for noise reduction. NOTE: Mpow ear defenders aim at reducing noise to a safe and comfortable range instead of isolating or canceling noise completely. 【COMPACT AND PORTABLE】Mpow lightweight ear defenders feature a foldable style as the ear cups collapse into the headband. Travel drawstring bag included for ease of packing them or to neatly store away, dust-free. Take Mpow ear defenders home and protect your lovely ones' ears every moments. .