Features FUNCTION AND EFFECTS: Regular exposure to an environment of >85dBA can cause permanent hearing loss or tinnitus, along with other health problems, including high blood pressure, anxiety, sleep disorders, insomnia and fatigue. COMFORTABLE AND BREATHABLE: Noise canceling headphones feature an ergonomic headband and soft padding that reduce pressure on the head for superior comfort. The large space inside the earcup ensure air permeability. RUGGED AND SOUNDPROOFING: Made from a rugged ABS housing and thickened sound absorbing cotton, the earmuffs have an NRR rating of 28dB and provide plenty of noise insulation. FLEXIBLE AND ADJUSTABLE: The adjustable headband and 360° rotatable earmuffs with comfortable foam are adjustable to fit all sizes from children to adults, pulling or pushing the earmuffs from a metal cord to adjust the size. COMPACT AND EASY TO CARRY: Noise cancelling headphones fold up nicely and fit in a backpack or briefcase, taking up very little space. Feature: 1. APPLICABLE SCENARIO: Stylish hearing protectors are ideal for shooting, sporting events, learning, woodworking projects and lawn care, ideal for operating heavy machinery or landscaping businesses Specification: Item Type: Ear Protection Ear Muffs Material: ABS and sound absorbing cotton Application: Sports events, concerts, decoration buildings, car horns, study, sleep, etc. Color: Black Package List: 1 x Ear Protection Ear Muffs Package List 1 x Ear Protection Ear Muffs