The package for the Oral-B CrossAction Pro-Health toothbrush.
 
The head of this toothbrush is big and bulky.
 
There are ridges on the back of the head that "massage" the inside of the cheek. Why, I can't say.
 
The The Oral-B CrossAction Pro-Health toothbrush is noticably longer than my travel case.

 
The head of the Oral-B CrossAction Pro-Health toothbrush is noticably bigger than my Reach toothbrush.