The product is a 2018 Rookie Retro Mega Mystery Series 1 pack from Break King, featuring sports trading cards with Shohei Ohtani as the main player. This pack is a rare find for collectors and fans of the Japanese baseball star, offering a unique opportunity to acquire limited edition cards from his rookie season. With a focus on nostalgia and mystery, this series offers a fun and exciting way to appreciate the talent and career of one of the most promising athletes in the world.