Seltzers are sweeping onto the scene and rightly so. If the popularity of LaCroix is any indication, the demand for a low-sugar, low-calorie, THC-infused sparkling drink has to exist. Oh Hi is banking on it with its line of delicious water-soluble THC and CBD seltzers. The current flavor lineup consists of Lemon Lime, Grapefruit, Ginger Basil Limeade and Pomegranate; choose between 15 milligrams of CBD isolate or 10 mg. of THC.