Start by filling a clear glass or a mason jar with ice cubes to keep the drink chilled.
Carefully pour the blue sports drink into the glass, filling it about one-third of the way.
Slowly pour the lemonade over the back of a spoon to create a layered effect. This should fill the glass another third of the way.
Finally, again using the back of a spoon, gently pour the cranberry juice to fill the glass to the top. This will create a beautiful red, white, and blue layered effect.
Garnish with fresh blueberries and strawberries on top if desired.
Serve immediately with a straw or a spoon for mixing.