Quite a lot of space and if you pack heavy stuff in the bottom it may stand upright if that is important to you. Handle a bit flimsy but still very useful on smooth surfaces. Did fit easily in small size checker of Easyjet but only just didn't fit in the bigger one because of the wheels.
If you like me thought you were doing the right thing buying locally produced food, visiting farmers' markets, trying not to buy everything in the supermarket, then this is a must-read. Now I would love to see a carbon footprint label on my groceries sooner than later.