EARPLUGS 2.1 are a new step in offering sound experience, comfort and protection at the same time. It's integrated patent pending fully ventilated acoustic filter - allows you to enjoy making and experiencing music all day! All EARPLUGS 2.1 come with an unique cord with full block option! It allows you to switch from being protected (SNR 18dB), to not protected to a total full block protection (SNR 28 dB) in no time. This without having the chance of losing the earplugs!