Earmuffs - 3M PELTOR Optime 105 Earmuffs, Hard Hat Attached, H10P3E*PRICED PER EACH. (1 CASE = 10 PAIRS) Item #: H10P3E 3M Stock #: 7000002327 3M PELTOR Optime 105 Earmuffs feature a vibrant design to provide high visibility and double shell technology to provide effective hearing protection. 3M PELTOR Optime 105 Earmuffs are intended for noise levels up to 105 dBA. They feature added mass and volume, plus a double shell ear cup design (two cups connected via foam inner layer) to boost the noise reduction through the