If you struggle to remember to drink more water regularly let alone in this UK heatwave, then you’ll love this ad campaign by Vittel water.

Created by Ogilvy Paris Innovate, this brilliant film has given a clever way for Vittel to remind people to drink the recommended eight glasses of water a day. ‘Vittel Refresh Cap’. A tailor made cap that pops a flag every hour to gently remind you to drink.

Campaign genius.