Cold mate is called "Tereré" (tey-dey-rey) in Spanish, and that's what we offer with this low calorie, unsweetened version of our Traditional Tereré. Ideal for the mate purist who wants a clean, crisp mate on the go. Each Guayakí Organic Yerba Mate bottle contains caffeine levels comparable to a cup of coffee, however, the stimulation is balanced by mate's natural theobromines and theophyllines as well as other restorative nutritional content. As a result, drinkers feel a sustained energy, clarity of mind, and the general well being characteristic of mate. Grab a bottle before any physical activity or going back to the office, and experience the good energy.