I tried them myself before the kids. Just to make sure there were comfy, and worked to reduce noise. They looked small. To my surprise they fit me, covered my ears, comfortably. I thought they might squeeze my head. They hugged my head, like perfect little pillows surrounding my ears. I wasn't sure about them, they seemed tight, and small. They were NOT! They are perfect and keep those loud scary bangs out. I'm glad I bought these, I'm glad I tried them myself. Otherwise, I would not have been so eager to put them on my kids. Great product for the price. I'm 34 I'd say I have a pretty wide head. They were probably stretching to the max on me, they fit my 4 year old daughter and my 5 year old son. We've owned them for months now, they are still just as good as they were brand new.