Fashionable and lightweight design with a hard outer shell The earmuffs combine a stylish, lightweight profile with a hard outer shell to provide durable protection without added bulk. Lightweight and comfortable for extended wear while maintaining a modern appearance. Fine craftsmanship and durable performance Telescopic adjustment is firm and durable, ensuring a secure fit over time. Earmuffs have undergone extensive durability testing (over ten thousand tests) for reliable, everyday use. Adjustable angle for comfort Rotatable and adjustable angle lets you set the earmuffs to your preferred position for maximum comfort and fit. Hard hat compatibility with userfriendly design Includes a rotatable hard hat buckle for use with safety helmets, enhancing compatibility and convenience on the job. Key benefits Function: hearing protection with adjustable earmuffs and builtin hard hat buckle. Compatibility: designed to work with safety hard hats via the rotatable buckle. Material: hard outer shell for durability and a lightweight feel. Performance: reliable, tested durability and a secure, comfortable fit. Fit: adjustable telescopic mechanism and angle adjustment to suit individual use. Usage scenarios Construction sites where workers wear hard hats and need reliable hearing protection. Manufacturing environments or warehouses requiring comfortable, allday earmuffs with helmet compatibility. Woodworking or metalworking workshops where ear protection must be worn with safety headgear.