- RUGGED AND SOUNDPROOF: Constructed from durable ABS housing and thick sound-absorbing cotton, these earmuffs feature a Noise Reduction Rating (NRR) of 28dB, ensuring effective noise insulation to protect your hearing in loud environments. - COMPACT AND PORTABLE: Designed for convenience, these noise-canceling headphones easily fold for storage, making them ideal for travel. They fit comfortably in a backpack or briefcase, occupying minimal space. - FLEXIBLE AND ADJUSTABLE: The earmuffs come with an adjustable headband and 360-degree rotatable cups, ensuring a comfortable fit for everyone from children to adults. Simply pull or push the earmuffs along the metal cord for a customized size. - FUNCTIONALITY AND BENEFITS: Regular exposure to noise levels above 85dBA can lead to permanent hearing loss, tinnitus, and other health issues such as anxiety and insomnia. These earmuffs effectively mitigate these risks by providing a protective barrier against harmful noise. - USE SCENARIOS: - Ideal for construction workers or individuals in industrial settings, protecting against loud machinery sounds. - Useful for musicians and concert-goers, minimizing sound distortion while preserving audio quality. - Perfect for students studying in noisy environments or anyone needing peace and quiet for relaxation. These earmuffs combine practicality and performance, making them a vital accessory for anyone seeking to safeguard their hearing in various situations.