1PC anti-noise portable protector safety earmuffs for work/study with good sound insulation Work Safety Earmuffs Anti-Noise Portable Ear Protector For Work Study Sleeping Woodwork Shooting Ear Hearing Protection Adopts ABS shell and inside sound-absorbing sponge, double shell to provide effective hearing protection Over-the-head stainless steel headbandcovered with soft pad, feel comfortable even wearing for long time Use with In-ear ear plug will get better sound insulation Comply to international standard, SNR:29dB Effective hearing protection in the most demanding noise environments where noise exposures are expected to reach as high as 105 dB Ideal for working, studying, sleeping,Woodworking, airpot, construction site hearing protection Material: ABS Color: Yellow Size:Average Size 1x Earmuffs