H with a dash of 2-O. At 10-years-old, Jaden Smith launched the idea for JUST after seeing plastic trash floating around him while surfing. They use only 100% spring water packaged in a carton made mostly of paper, from sustainably managed forests. JUST is a Certified B Corporation and their water carton is fully recyclable. One carton might not save the world, but they believe it's a start.