Kiwi is selling this Head Strap for Meta/Oculus Quest 2 with the 6400 mAh battery, for $69.99. Normally $99.99, and the Proprietary Meta/Quest Elite Strap is $119. I’ve read that many people prefer the Kiwi head strap over the Meta/Quest version.
https://www.amazon.com/dp/B09XF69CR9