Nylon, ABS, FoamImported[Baby Hearing Protection]: Specially designed for babies and toddlers of age 3 months to 36 months; 25dB Noise could be blocked ( SNR 25dB EU certified) in average. Infant eardrums are more fragile, every year there will be babies who are not protected their ears and caused hearing loss.[Ultra Soft & Safe Material]: Soft ear pads are made of noise reduction foam material covered with artificial leather. Muff shells are made of ABS - hard and anti-pollution. Elastic headbands are made of mixed colored polyester - soft, comfortable and adjustable to fit different sizes of heads.[Multiple Uses]: Works for sleeping, travel, parties, festivals, fireworks and all loud noise. In order to protect the baby's hearing, youre not recommended to leave your babies in super high noise environment such as shooting range even if wearing earmuffs.[Anti-slip]: There is a non-slip strip on the headband, which can effectively prevent the headband from slipping into the eyes when using ear muffs.