This hippo is so much fun! The attention to detail of the facial features, especially the mouth that opens, makes all the difference.
Putting him back into a rectangle to fit him in the box is pretty easy. The difficulty is more in ensuring you rotate the correct way for the tightness of the string.
I gave this four stars due to the fact that my product has two holes in the mouth, with the hole being used up closer to his teeth. This makes the string impossible to miss when his mouth is open.