The vintage complete set of 4 Flintstones RocDonalds frosted glass mugs is an original promotional item created by McDonald's in 1993 in the United States. The mugs feature characters from The Flintstones and were likely used as a marketing tool to attract customers to the fast-food chain. These collectible mugs are a nostalgic piece of memorabilia from the restaurant and fast-food industry, showcasing a unique theme that appeals to both fans of The Flintstones and collectors of advertising merchandise.