Safety Ear muff , ABS shell body ,soft foam pad Head band can be folded for storage Conveience for carrying . NRR:24dB Safety Ear muff,ear protector,folding earmuffArt no.:EM114Convertible design ,convenient to carryWear well ,with soft internal paddingNoise reduction rate is :24dBApplication :Sawer,driller ,maintainer,etc Folding Ear muff