Features: 1.The earmuffs can be put on the hard hat and matched with the hard hat reasonably, which can provide better protection during work. 2.Can be directly mounted on many industrial safety helmets without the use of other accessories. 3.The high-density foam padding provides a low-noise seals that makes the wearer more comfortable. 4.The position of the earmuffs can be adjusted according to individual needs to ensures comfortable wearing. 5.Suitable for general industrial use and site construction, such as facility maintenance, grinding, electrical, machine operation, sanding, welding, dismantling, painting, sandblasting, assembly, cleaning. Specification: Condition: 100 percent Brand New Item Type: Hard Hat Earmuffs Material: ABS and Sponge Lining Color: As picture shown Function: Anti-noise and sound insulation Scope of Use: Hearing protection, used with hard hat SNR: 30db NRR: 25db Wearing Method: Used with helmet (NOT including helmet) Application: Suitable for various noise environments such as construction sites and factories PackageList: 1 x Pair of Noise Reduction Earmuffs1 x Manual