The MILWAUKEE® BOLT™ Earmuffs are designed for adjustable, comfortable wear. These cap-mounted earmuffs provide an adjustable fit thanks to the center-mount design. The earmuffs also allow for balanced wear with a 360? rotational arm that can pivot to multiple storage positions when not in use. The comfortable, pressure-reducing cushion helps avoid pressure and discomfort when wearing the earmuffs for extended periods. These earmuffs have the indicated NRR to protect you against hazardous noise and are CSA Class A certified. Our earmuffs are a part of the BOLT™ System that allows users to secure accessories simultaneously. Certified for use with MILWAUKEE® Safety Helmets and Hard Hats. Package Contents: (1) Pair BOLT 24dB Earmuffs Features: Adjustable Fit - Center-Mount Design Balanced Wear - Multiple Storage Positions Comfortable, Pressure Reducing Cushion BOLT™ - Secure Accessories Simultaneously Secures into Milwaukee® Safety Helmets and Hard Hats BOLT™ and Universal Accessory Slots Can be Worn with Additional Accessories at Once When not in use - store on the back, top, or below the brim of the Milwaukee® Safety Helmets and Hard Hats Color Coded by NRR and Performance Level NRR 24 dB CSA Class A Dielectric Construction Third-Party Tested and Certified