The USA is still among the few countries following the Standard Units of Measurement called the Imperial System (as does Liberia and Myanmar). The remaining 192 countries around the world use the Metric System also known as the International System of Units, abbreviated as SI. This playing card deck attempts to bridge the gap and explain how to convert USA measurements to those of the metric system. It's not too late to learn! This colorful deck is printed on coated stock and wrapped in a clear hard case. Learn something new as you play your favorite card game!