For Christmas 2013, Coke Zero launched an interactive website that allowed people to customize the designs of their Christmas sweater, which have a significant role in United Kingdom Christmas traditions. On the website, people could detail the cut, pattern, and icons for their sweater, and join a popularity contest. Users could choose from Christmas trees and Santa's head, to reindeer, sleighs, and turkeys. This initiative was tied to a social media campaign, where the top 100 sweater designs with the most votes were manufactured and shipped to the contest winners. According to the Coca-Cola Company, the website generated nearly 42,000 sweater designs in its first four days.