To promote a special winter offer – buy 5-chamber windows for 3-chamber windows’ price.
The main objective for the solution is to turn the basic discount campaign into the charity for child orphanages by sharing warm clothes, because there would be no need to put it on at home in winter if the customer got two more chambers in their windows for free.
Give warm clothes for warm windows.
The term of the offer had to be prolongated due to it’s popularity. Furthermore lots of people just brought warm clothes for charity without even asking of the discount proposed.
Concept, slogan & execution.