Rhombus Energy keeps energy simple — sparkling water, real fruit juice, and a clean boost of caffeine without the unnecessary sugars or artificial extras. With just 20 calories, 100mg of caffeine, and 100mg of L-Theanine in every can, Rhombus delivers a crisp, refreshing taste and balanced energy that’s easy to drink any time of day. Available in four flavorful, crushable, and unique varieties.