I've bought these:
https://www.amazon.com/gp/product/B00OBLZZNG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
and 2 of these:
https://www.amazon.com/gp/product/B00B7C09EM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
both were under $30 when i got them, and both work fine. they are more comfortable for the kids than the stock ones. The dealer tried to sell me stock ones for like $200 and i laughed. They don't even sound good.
any 2-channel IR headphones should work.