Perfect for any noisy environment but in particular sports events, music concerts / festivals, aircraft noise, vacuum noise, garden power tool noise, shopping centres.Ear muffs are widely used in classroom and library to muffle the annoyed noise such as whispering to help primary school students focus more on studying and reading.Suitable for noisy environment: outdoor.Features: Adjustable headband made of non-metallic material is suitable for different types of rotating cups, making it more comfortable to wear.Recommendation: Wipe and clean the outside of the ear cups. They are best worn with earbuds.The active area is adjustable, and the size of the ear cups can be adjusted according to individual needs to ensure the comfort of the headband.Electrically insulated headband, dual headband design helps reduce heat build-up, while providing good balance, making it more comfortable to wear.Uses: Concentrate and protect hearing is a good helper for your home, dormitory, self-study classroom, travel , factories, construction sites, urban areas and other places from noise interference, and is a good partner for your healthy life.The side removable interface of the ear cup can be rotated to adjust the angle of the ear cup according to different face shapes.Frosted fiber hair band, pressure diffusion technology, artificially designed hair band, made of matte special fiber, simple and stylish to wear, long service life.High-quality sound-absorbing cotton. The interior of the army is filled with high-quality sound-absorbing cotton. The dense gap of the sound-absorbing cotton can greatly reduce the passage of sound.After-sales: All products are checked before shipment, if you have questions about the products, please contact us immediately.Packing list: a pair of earmuffs.The delivery period is 15~25 working days. If our products are not satisfactory, please contact us and we will be happy to receive your feedbac