Packing the right size baggage is an art form, really. You want to fit everything you need, without overstuffing your bag (hello, extra fees!). So, take some time to plan ahead, and make sure you've got the right bag for the job.
Check In Baggage Size Chart: Checked Luggage Size – BQSHA
And, let's not forget about weight limits! You don't want to be that person who gets to the airport, only to find out their bag is way too heavy. Ouch! So, be sure to check your airline's weight restrictions before you start packing.