Alpine Muffy Baby Noise-Cancelling Headphones Blue are designed to protect babies from harmful noise and loud music.These headphones offer optimal protection (23DB), their soft and adjustable headband is made of comfortable and elastic material for a perfect fit, without pressure on the fontanel. Easy to put on thanks to a unique two-stage click system, they prevent overstimulation by noise and contribute to a peaceful sleep when away from home (travel, restaurants, etc.).Suitable for babies and toddlers from 3 to 36 months.Metal-free.CE certified.