In 2004, M&M's was rated as the most popular logo in the United States. M&M's slogan "melt in your mouth, not in your hand" was also rated as the first US advertising title by Advertising Weekly in 2004. Upon its first launch in 1941, it became the favorite brand most loved by American soldiers in World War II, when M&M's chocolate was sold to the military in a paper tube package, making it a convenient snack in the military life (portable, regardless of the weather condition). In the late 1940s, M&M became popular among the public. In 1948, its package was changed from a paper tube into a more personalized brown plastic bag, which has been used up to now.