[NAGDU] Airline seat designations

[Tracy Carcione]

Can one of you frequent flyers enlighten me about airline seat designations,
maybe?

I have a seat called "economy" on a Boeing 757.

I know I had plenty of room for me and Krokus in "economy+" on a commuter
plane, one of those planes with maybe 80 seats.

So do I need to upgrade to "economy+" to be sure we both have some space?
It's a 6 hour international flight, so I don't want to be really squashed
in.

Thanks.

Tracy