So it should come as no surprise that football clubs around the world benefit from incredibly lucrative kit supplier deals.
From the likes of Manchester United to Arsenal, and Real Madrid to Barcelona, the top European clubs earn millions per year from their kit supplier deals.
Sports brands involved in top flight football include household names such as Puma, Adidas and Nike.
Here, we count down some of the staggering big-money kit supplier deals in world football.
Click below to begin the slideshow.
First up is Manchester City, with the Premier League club thought to earn around £15m per year from their kit deal with Nike.
Their deal is due to expire in 2019.
Next up is a French powerhouse…