they do the same job as the OEM for less than half the price. The bag has velcro on the back, so it sticks to the case & doesnt move around. ILL BUY MORE. Honestly I was so happy to get anything to do with gaming at a reasonable price that he uses without complaining. One of my best purchases on Amazon! I may wait a few days before I tell my 12 year old the controllers are up and running again though. Inside the box there are a total of 8 gems just laying there. The older model got misplaced last month and I turned to this one again. It was still certainly better than not having any ear protection at all. Great cage