Marc Carter's 14-year-old son Ben who suffers from severe autism, has drank from this Tommee Tippee cup, and no other Tommee Tippee cup out there, since he was two years old. Since then Marc has grown very concerned that his son is apt to suffer severe consequences of no other cup is found as replacement. Marc said, "People say he will drink when he's thirsty, but two emergency trips to A&E with severe dehydration say otherwise."