Earmuffs are one of the many products that have been advertised by Yellow Face. This advertisement took place before the intro in the 6th episode of Battle For BFDI, "Four Goes Too Far".
The earmuffs are used to protect the user’s ears from loud noises, possibly including Four's screech. They contain 8 artificial ingredients, and are colored blue, white, and gray.
They are oversized on Yellow Face, so they are likely very big.
- This is the first ad and advertised item on BFB.
- These "revolutionary" Earmuffs are a nod to the Revolutionary Headphones from season one.
- They also seem to work as a sound transferring device, because when Four screeches into the earmuffs, Yellow Face gets dizzy.