Perfect size that can easily fit under the seat in front of you. There is no designated laptop space. I was able to pack 2 days worth of clothing including blazers for each day and one extra pair of shoes. There are lots of smaller zippered compartments but the use of them takes away from the interior space if you insert anything with any bulk like a scarf or jewelry roll. I have no idea what the intent of the side pockets is but absolutely nothing but paper will fit in them, not even flat shoes. I was very disappointed in that. Rolled ok, but went bonkers when I tried to run with it, so I wouldnt advise that. I wish I had known about the side pockets - I would not have purchased due to the wasted space and I thought I could put shoes there.