https://intercom.help/airlines-support-aefaa9296861/en/articles/10821098-how-many-bags-can-you-take-on-united-for-free-free-baggage-policy
https://intercom.help/airlines-support-aefaa9296861/en/articles/10821098-how-many-bags-can-you-take-on-united-for-free-free-baggage-policy