Oh gosh. I absolutely hated these. I bought three different types of ear muffs for 4th of July because I wanted to make sure I had a working pair. These were terrible. No matter how I adjusted these, they would slide and pop right off my 8 month old's head. And there is nothing to secure the actual muffs to the head band, they slip right off the head band. The muffs just have this slot that the band slides down in, but the slot doesn't have. Hook or anything for it to prevent the band from coming back out.