The convenience store chain says its new drink will have 50-percent fewer calories.
Its first flavor will be Fanta Sugar Free Mango.
7-Eleven says it plans to roll out other flavors throughout the year.
Eight ounces of the new mango drink is expected to have 20 calories.
U-S-A Today says this is the first time 7-Eleven has rolled out a low-calorie line of its popular Slurpees nationally.