I think they have a small protein snack bar (maybe that one is described as lite?) and a full size protein bar, I do use the larger one. It is on this website described as a Special K Protein Meal Bar. The snack bars are to the right of the meal bars.
I used them religiously for breakfast when I first started calorie counting. It was something that was easy for me to account for and I enjoyed them. I got the chocolate peanut butter most often because it is my favorite.
http://www.specialk.com/#/Products