Hi all,
I will be flying by frontier airlines, economy fare. I have purchased carry-in luggage through website. I wish to carry my backpack in addition to that. When I checked their website, link http://www.flyfrontier.com/customer-...rry-on-baggage it says that

everyone, regardless of your Fare Option, is allowed to carry on one personal item for free.

My question is, is backpack included as 'personal item'?