Marbles are a favorite pastime, and they are perfect for collecting, parties playing games and lots more. Mix of colors, this 60 pack contains 14mm glass marbles in vibrant colors. ROLLING THROUGH HISTORY Perhaps one of the oldest toys on earth, marbles can be traced back to the ashes of Pompeii and ancient Egyptian tombs, where they were originally made of clay, stone, or glass. These marble sets can be used in traditional marble games like Chinese Checkers, Marble Run, and Aggravation. Kids have been collecting marbles and making up marble games for centuries. Truly a classic toy.