Fanta Zero Sugar Slurpee

idk if this is the right flair, sorry in advance if not

Ok so 7Eleven has a new slurpee flavor (apparently it’s been around longer than I knew about). It’s a Fanta Zero Sugar Hibiscus Berry flavor. I have read that it is not in fact entirely zero sugar because the slurpee base has sugar. It is def fewer calories than regular slurpees but the issue is idk how many calories it is per size. And there’s no nutrition info online anywhere.

Anyone tried this/know about this? I’m a sucker for sweets and soda like drinks so I’ll take any alternative that makes sense for me without screwing with my caloric intake for the day.