If you’re worried about Apple’s new wireless earbuds falling out of your ears, CEO Tim Cook thinks you should stop worrying so much.

“I’ve been wearing them for a while and because they don’t have wires on them the wires tend to help the earbud to fall out because it applies weight on those,” Cook said about the AirPods during an interview with ABC News’ Robin Roberts on Good Morning America on Wednesday. “I have never personally had one fall out.”

Cook went on to say that he’s even used the AirPods while dancing and they stayed in.

Apple AAPL announced its AirPods at its iPhone 7 event last week. The wireless earbuds connect to an iPhone or Apple Watch through Bluetooth and also include a microphone for users to talk on the phone. The AirPods are slated to launch in late October for $159.

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The AirPods have been a source of debate over the last week, due in no small part to their design and functionality. The devices are rather small and there is some fear among those who might buy the wireless earbuds that they could get lost easily.

Perhaps more importantly to users, they represent the simple reality that the iPhone 7 no longer comes with a headphone jack, requiring Apple to provide a new headphone option that doesn’t plug into the smartphone. Those who want to use tethered headphones will need to use an adapter that comes with each iPhone 7 and allow users to plug the devices into the smartphone’s Lightning port.

The design has also raised questions over whether the AirPods will actually stay in user ears, given their diminutive size and appearance as if they’re hanging from the ears. That’s likely why Cook shed light on his experience with the AirPods.

TIME‘s Lisa Eadicicco recently took Apple’s AirPods for a spin (or listen) and didn’t note any troubles with keeping the earbuds in place, describing they deliver “loud and rich audio.” However, Eadicicco did say that their design leaves a bit to be desired.

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“The main drawback I’ve encountered with Apple’s AirPods so far is superficial yet important: their appearance,” Eadicicco writes. “A white stem hangs down from your ears while wearing them, making them anything but discrete.”

But at least you can dance with them.