Appropriate for a wide range of applications Earmuff cups are made of non-conductive material while the metal components of the headbands and the helmet attachment mechanisms are covered in non-conductive material High-performance arms; balance durability and flexibility Easy click in/ click out: Move cups on and off ears easily Store with cups clicked in or out Compatibility with hard hats; designed for use with a standard hard hat slot Slim and lightweight; comfortable for wearers, especially with other protective equipment Fit can be confirmed with 3M™ E-A-Rfit™ Dual-Ear validation system Compatible with WS-CUSH Peltor Wireless Bluetooth Communication accessory PELTOR ELECTRICALLY INSULATED EARMUFFS