I found this in a thread at a dif diet web discussion board:
""Beware of the crystal light slurpee. I assumed, probably as many did that it was just like crystal light only slushy. Well, apparently they add something to the mix to make it slush up which adds carbohydrates and calories. I emailed 7-11 for the nutritional information and they replied back that a 22 oz cyrstal light slurpee has 88 calories and 21 grams of carbohydrates. "


I knew it was too good to be true! might as well have a coke slurpee lol