Purchased this almost 11 months back. Always a great fit. BUT very heavy (surprisingly! It is plastic ear cups , but the headband is Pleather wrapped metal. I have followed the instructions exact and nothing. If you can’t see yours light up if you do this yours might be faulty. Sometimes as soon as they’re out of the package and sometimes 6months later 🤷🏻♀️ Also I know I could just get a different charger. They fit me now like a glove and I can safely say they are the most comfortable slippers I have ever worn. After all Ive read about these, I expected better quality and durability. Only have worn them inside the house.