The Rainbow Slush is only available in size medium ... As for the flavor, it’s delicious. We have blue raspberry, lemonade, and strawberry flavors with real strawberry chunks.

A s temperatures rise, so does the demand for icy, flavorful refreshments—and Sonic is here to deliver with something magical ...

JP Saxe’s curated drink is a mango slush with Nerds candy, while Kelsea Ballerini’s is ocean water with blue raspberry and lime ... offerings with a simple lemonade with strawberries ...