With portable for easy storage, take it anywhere and have anytime. There are swirls in the coloring for each color. Great for Checkers, runs or any other game Have with marbles everywhere We believe you or your little ones would definitely love marbles. Age: 3 years 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 are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.