In recent times, regulatory sports bodies have increasingly stepped in to ensure the competitiveness of their respective sport (e.g. budget limits on car development in F1, limitations on player transfer fees in Football & testosterone limits in athletics). These regulations can be called "fairness regulations"

Replicas, or "reps", are pieces of clothing (or other replicable items) that imitate the designs of established brands. Also known as knockoffs, this clothing is not authentically produced. Reps have grown in popularity in recent years, with websites and social media pages increasing demand for reps globally.