3M helmet-mounted earmuffs. Only tried on for fitting. If you understand, I would appreciate your consideration. The following is an explanation by AI. Thank you. The 3M Peltor Optime I provides comfortable noise reduction with cushioned earcups. - Brand: 3M - Model Name: Peltor Optime I - Product Name: H510P3 - Color: Yellow - Material: Cushioned earcups - Features: Noise reduction function to protect ears Thank you for viewing.