crystal light pure on the go drink mix variety pack, 6 flavors, 1 box of each flavor, 6 boxes total crystal light with no artificial sweeteners, flavors or preservatives crystal light pure mixes up into pure low-calorie perfection at just 15 calories per serving. crystal light pure on the go is sweetened naturally with truvia stevia leaf extract and sugar. truvia brand sweetener is made from the best tasting part of the stevia plant.