Be part of the show with these sound activated lighted earmuffs! When the Monster Jam trucks take to the track, your lighted earmuffs will light up and increase in speed as the roar of the trucks gets louder. Perfect to enjoy the show and watch the cool lights rev with speed as the trucks perform! Adjustable band - one size fits most. These Ear Muffs serve as a novelty item rather than full ear protection. To ensure full ear protection, it is reccomended to wear protective ear plugs under the earmuffs. I have been an Etsy seller for years and decided to move to this platform to sell items that I never used or barely used and are in mint condition. You can trust that your items will be shipped with efficiency and care.