Please Join the Hippo Water Roller Project in London at the WATER FOR THOUGHT: Life-Changing Design exhibition from 25 January - 23 March at the Roca London Gallery. Read more: http://eepurl.com/t5Rpb. The Hippo water roller will be on show with some of the World’s most innovative product designs for accessing, transporting or purifying water in developing countries. The exhibition is curated by leading international designer, Hector Serrano, for the We Are Water Foundation. International exhibitions continue to provide us with much needed exposure to promote the Hippo water roller.