Helmet Mounted Ear Muff

3M H9P3E Helmet Mounted Ear Muff • Lightweight Helmet attachment• Ideal for environments including factories, sheet metal works, schools, printing and textile operations and power equipment.• Dual low-pressure bands improve comfort.• Broad foam cushions provide low surface pressure•Ideal for noise levels up to 98dBA.•Noise Reduction Rating 23dB. (When used as directed)