Klein Tools Cap Style Hard Hat Earmuffs are designed to work with all Klein Tools Safety Helmets and Cap Style Hard Hats, and are intended to provide limited protection from harmful noise. Tested in accordance with ANSI S3.19-1974 standards, the NRR (noise reduction rating) for these earmuffs is 27dB when paired with Klein Tools Cap Style Hard Hats, and 26dB when paired with Klein Tools Safety Helmets. Designed for all-day comfort and effective acoustic seal.
