Player Glass Marbles with Marble Jar For Storage, Set of 50, 16mm, Assorted Colors With portable container for easy storage and endless fun anytime, anywhere! Size is 5/8. Top line quality glass marbles: all marbles in the container are constructed upon the highest quality standards. Therefore, they are made to be top-notch and exceed your highest expectations! For super fun games like the marble run or the traditional marble game that boost your childs hand-eye coordination and develop useful fine motor skills! Incredibly versatile toy: children have been playing with marbles for thousands of years  they are a toy that will never fall out of fashion! Assorted 5/8" player marbles: get the most beautifully made, colorful marbles in existence - playing with marbles is a cheap and cheerful activity that will keep your little ones entertained for hours!