This is one of the defining features of Tour Amigo to help you establish the difference between tours. When you press the compare button you will see the tour shrink into the Tour Amigo comparison backpack in the top right corner. You will also receive a pop-up message as shown in the image below.
You will also notice that your Tour Amigo comparison backpack how many tours are in your backpack and the comparison button now reads "Go To Backpack" for any of the tours you have selected to compare. Please see image below.
The last step is to either press on "Go To Backpack" or simply click your personal Tour Amigo backpack in the top right corner. This will take you inside the backpack where you are able to easily compare all of the characteristics of the tours. Please see image below.