This San Francisco 49ers Christian McCaffrey Scarlet Red Block Numbers Nike Vapor F.U.S.E Limited Jersey is an officially licensed NFL jersey made by Nike. The jersey features the state-of-the-art Vapor F.U.S.E. chassis and it gives the jersey an authentic look. The numbers and letters are not stitched.Nike Vapor F.U.S.E. JerseyHeat-pressed name and numberMade from Nike's proprietary lightweight materialDirect embroidery details including the Nike swooshes and team logo patchesF.U.S.E. Technology: stands for Functional Utility Stretch Engineered, meaning the jersey is tailored for enhanced mobility with strategically placed stretch zones that allow for a natural range of motion.Chainmaille mesh grill and metallic-effect NFL Shield on the collarDri-FIT® technology wicks away moistureVentilation zones: Includes mesh panels or laser-cut perforations in key areas like the underarms and sides to improve airflow.