Zero Calorie Core CollectionAbout the Zero Cal Core Collection The Zero Calorie line is designed to deliver light, refreshing infused water flavors. It contains natural flavor extracts, without sugar, calories or artificial preservatives resembling what you might expect from a spa or wellness club Each capsule makes up to 35 servings and is packed in recyclable, glass capsules. The Zero Calorie Essentials line contains 3 of the Lime Cucumber capsules, 3 of the Hibiscus Water