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3M PELTOR Optime 98 H9A Earmuffs, NRR 25 Over-the-Head Hearing Protection moisture wicking Will it still work duringEDITORIAL REVIEW: 4. 5 5 WC Safety Review 3M PELTOR Optime 98 H9A Earmuffs NRR 25 Over the Head Editorial assessment by Steven Eaton, WC Safety editor, based on published 3M specifications and category fit. We did not laboratory test this product. CHECK PRICE ON AMAZON SHOP EAR MUFFS As an Amazon Associate, WC Safety earns from qualifying purchases. Full affiliate disclosure. 3M PELTOR Optime 98 H9A Earmuffs, NRR 25 Over the Head Hearing Protection