The Marucci sports MOBBLPY9-12 is a set of one dozen youth practice baseballs from a company dedicated to delivering top-quality products. Marucci, which is founded, majority-owned, and operated by current and former Major League players, is committed to providing athletes of all levels with the tools they need to succeed. With roots in Baton Rouge, Louisiana, Marucci was started by two former Major Leaguers and their athletic trainer who began handcrafting bats from their garage. Over the past decade, their dedication to quality and understanding of player needs has led to Marucci's rise as the number one bat in Major League Baseball.