These ear defenders are perfect for children with Autism and Sensory Processing issues who are sensitive to noise and certain sounds. Ear defenders are great also for blocking out sounds (such as vacuum cleaners & hairdryers) or when your child gets over stimulated.  The ear defenders are fully adjustable and will fit almost any size head from a small child (over 6 months) to a young adult. These ear defenders can also be folded to fit easily in your bag or pocket and they come with a padded headband. Weight 190 grams SNR 24.3dB, Conforms to EN352 Dimensions 10cm H 12cm W (folded); 17cm H 13cm W (opened)