Ruby Red Grapefruit Polar Seltzer everything that is refreshing about grapefruit, but without any of the mess. Polar Seltzer Premium Sparkling Water. Tiny Bubbles, The sparkle sets us apart. Natural Flavors, The taste of our seltzers is defined by the quality ingredients of the ingredients we used. Polar Seltzer is made of 3 simple ingredients water, bubbles & natural fruit flavors Pure water, zillions of tiny bubbles to tingle your taste buds, and great tasting fruit flavor to satisfy cravings Why be flat when you can sparkle, Enjoy naturally calorie-free refreshment made with nothing but water, bubbles and natural fruit essence No Sugar, No Sweeteners, No Sodium, No Carbs, Gluten Free, Vegan & Kosher