Stur® Liquid Water Enhancer Boldly Blue & Blueberry. All-natural ingredients. Natural flavor. High antioxidant Vit. C. 0 Calories. 0 Sugar. 1.62 fl oz (48 ml). Made by a father for his family to love water naturally. 2% Juice. Non-GMO. Sugar-free. Colors will fade, it's natural! Visit: www.sturdrinks.com.