40 pcs Glass Marbles:20 x Blue and Transparent Glass Marbles & 20 x Black and White Glass MarblesWith portable marble jar for easy storage, take it anywhere and have fun anytime.There are subtle swirls in the coloring for each color. Great for Chinese Checkers, marble runs or any other marble gameHave endless fun with our marbles everywhereWe believe you or your little ones would definitely love our marbles.Age: 3 years old and aboveDiameter: 16 mm (5/8 inch)Give pleasure for children when playing marblesDecorative your favorite aquarium; aquarium decorationDIY the pattern that you like in your spare timeAlso can to put these marbles in your garden the way to make a beautiful landscape and a good moodMaterial:glasscolour:Blue + transparent+Black+whitePackage Contents:40 x Glass MarblesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.