We found that some buyers reported that they did not know how to adjust their earmuffs or thought it was non-adjustable earmuffs. For this, I am sorry that we did not express it clearly. PROHEAE 032 kids earmuffs are indeed adjustable earmuffs, but in order to a better seal to protect your kids' ears and better fix each position you adjust, let it stay still, instead of always sliding, so we have made special reinforcement, but the reinforcement can still allow your kids adjust them by themselves. And note that the initial use is indeed a bit tight, this is to better fix each position of the adjustment, and after multiple uses, it will become smooth and still be able to be fixed in place. And the reinforced adjustable headband will also extend the life of the earmuffs. Don’t let your child miss the special experience anymore, don’t hesitate, TRY IT NOW! PROHEAR provides a ONE-YEAR WARRANTY, If you have any problems, please feel free to contact us.