3M Peltor Optime 98 H9A earmuffs.

The earmuffs provide noise reduction of NRR 25 dBA, capable of protecting against sounds up to 98 dBA. They offer comfortable wear, even distribution of pressure, and are suitable for various environments including factories, metalworking, schools, printing facilities, textile factories, and machinery work. They meet the ANSI S3.19-1974/CSA Z94.2 standards.