The design of these advanced hearing-protection headphones is so sleek that they demand to be noticed and considered. That’s exactly what our testers did and it was clear, after two months of testing they were impressed. To start, the headphones provide a good fit as they adjust, depending on the age and size of your child’s head, with ease. The headband is nicely padded, making them quite comfortable on the top of the head. This Passive version of Lucid Audio’s headphones are designed to do one thing, muffle loud sounds. Mission Accomplished. Even in some of the noisiest situations, parents reported that there was little reaction to the sound. These do not entirely block out sound which is a nice feature as the child wearing them can still hear someone talking to them at a reasonable level. Testers felt HearMuffs would be great for a younger child to wear during a nap while others are around or if you are out and about.