When I first opened the package these came in I was dismayed at how tiny they were - only about 11"x9"! I was so shocked. But..... it turns out that was just the smallest cube, and all of the others fold up to fit perfectly inside of it! This is perfect for storing when not in use.
The sizes are quite big and the variety of bags makes it not only useful but visually stimulating. Now I can't wait to start packing for my next trip!