Slurpee fans can get their brain freezes and sugar highs for free for one day this week.

Participating stores in the 7-Eleven chain are giving away free, 7.11-ounce cups of the popular frozen drink on Wednesday, "SlurpFree Day," from 11 a.m. to 7 p.m. to celebrate the beginning of the summer, the official Slurpee season, 7-Eleven officials in Dallas said Tuesday.

If you want the brain freeze without the calories, there's the new Slurpee Lite Fanta Sugar-Free Mango drink. The Slurpee Lite Fanta debuted this month and is the first of several sugar-free and regular flavors this summer, according to a 7-Eleven news release. The 8-ounce drink contains 20 calories, compared with the 66 calories in a Slurpee Fanta Wild Cherry of the same size, according to 7-Eleven headquarters. 

If one day of free Slurpees just isn't enough, 7-Eleven will celebrate its birthday on July 11 with Free Slurpee Day.