The 2021-22 SKYBOX METAL UNIVERSE ROOKIES trading card set features ice hockey players from the National Hockey League (NHL), manufactured by SkyBox in 2022. Made of metal and 20 Pt. thick, these original cards are part of the base set and highlight rookie players from the 2021-22 season. The cards are standard size, in English language, and perfect for collectors looking to add a unique and high-quality piece to their sports trading card collection.