â–¶ Earmuff Style: Behind the Head â–¶ Hearing Protection Style: Neckband â–¶ Suitable for use with a full-brim hard hat / helmet â–¶ DOSH SIRIM approved â–¶ Complies with CE Approved, EN 352-1:1993 â–¶ Single Number Rating (SNR) 34 decibels â–¶ One size fits most earmuffs â–¶ Comfortable and effective hearing protection â–¶ Soft wide cushions help reduce pressure around the ears to improve comfort and wearability â–¶ Stainless steel construction designed to help resist bending, warping and twisting â–¶ Earcup pivot points tilt for comfort that adjusts to individual wearers â–¶ Earcups with liquid and foam-filled cushions offer comfort for long wear and optimum seal