Em's 4 Kids Volume Limiting Stereo Headphones In built volume limiting, ensuring the volume never reaches above 85dB - the maximum recommended level for prolonged exposure Inline volume adjustment - IPod, Iphone, Ipad compatible Internal acoustic treatment, to help reduce external noise In-built strain relief to ensure the audio cord can't be pulled out of the earmuff cups Adjustable sizing for customized fit - Includes zippable carry hardcase