Caffeine Free. What's the biggest berry you can think of? Watermelon?? Who knew?? Sweet, juicy and refreshing, Watermelon is a special kind of fruit known as a pepo - a berry with a thick rind and fleshy center. (Apple Pieces, Rose Hips, Hibiscus, Raspberry Leaves, Natural Watermelon Flavor, Cranberries And Rose Petals).