The product is a set of VINTAGE Cat's Eye marbles from the 1990s to 2000s. The lot includes 44 marbles with 3 veins and 3 colors: blue, yellow, and red. Each marble has a diameter of 0.8mm. This set is suitable for various age levels, including 3-4 years, 4-7 years, 8-11 years, 12-16 years, and 17 years & up.