Hamilton Flex Stereo Foam Headphones (Red) are made from a single piece of EVA foam, a safe, non-toxic, BPA free, soft, flexible product that provides added comfort so kids can wear for longer periods of time. These stylish headphones are recommended for children ages 3 and up and are certified for all major USA and International child safety testing standards. Designed to protect little ears over time by never exceeding a sound of 85 decibels, Flex-Phones grow with the children that use it. The sound quality is clear and there's a 3.5mm stereo plug for compatibility with tablets, mobile devices, computers, CD players and more. For a more comfortable fit, just snap on the extension band.