Hi, Skinny...
There are other ingredients besides sugar alcohol that supposedly have minimal impact on blood sugar, so they are not included in the "net carb count" for the bars.
Get ready to hear many tell you to "step away from the bars." They are part of what many around here refer to as "frankenfoods." Because I work in a small boutique and am sometimes the only employee there for 7 hours at a time and can't bring food into the boutique, I sometimes use their nutrition bars as a meal replacement. But, it is only very occasionally and I truly use it as a meal replacement - not as a snack. I never use the smaller ones (which are the ones you have) and never, never, never the Atkins Endulge bars... those don't have the fiber or the nutrition that the meal replacement bars have and cause cravings for many.
Best of Luck to you!