With portable marble jar for easy storage, take it anywhere and have fun anytime. There are swirls in the coloring for each color. Great for Chinese Checkers, marble runs or any other marble game Have endless fun with our marbles everywhere We believe you or your little ones would definitely love our marbles. Age: 3 years old and above Diameter: 16 mm (5/8 inch) Give pleasure for children when playing marbles Decorative your favorite aquarium; aquarium decoration DIY the pattern that you like in your spare time Also can to put these marbles in your garden the way to make a beautiful landscape and a good mood Material:glass colour:Blue + transparent Package Contents: 20 * Glass Marbles(blue*10,transparent*10) Only 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.