Children don't need to be in the big leagues to enjoy double 'em up! Double 'em up is a great way to develop your child's memory and concentration skills as well as their love for baseball. Flip over two cards at a time and try to find a matching pair. If you double 'em up, you keep 'em! At the end of the game, the person with the most pairs wins. Featuring the colorful logos of every team in major league baseball, double 'em up makes learning easy and fun.