Thirty years ago, a professional club presented two jerseys per season. Today it presents three, sometimes four, and a fifth may come out for a European night. Many fans see it as a simple sales machine. That’s part of the explanation, but not the first: at the root of this whole system is a very concrete sporting rule, one that prohibits two teams from playing in colours the referee or spectators could confuse. Everything else, including the third and fourth kits, was built on top of it.
The colour clash rule, the origin of it all
Competition regulations, in both domestic leagues and European cups, require the same thing: the two teams must be clearly distinguishable, including to a colour-blind spectator and on television. Goalkeepers must also be distinguishable from their own players and the opposition. Each club therefore declares its kits before the competition, and the organiser decides match by match based on the combinations.
L’the home team generally plays in its usual colours. If the visitors wear colours that are too similar, they have to change. When neither of their first two kits resolves the clash, particularly with tricky combinations like red versus burgundy or navy versus black, the third kit becomes the only regulation-compliant solution.
This constraint explains one thing many fans find absurd: a club sometimes playing in its away kit at home, or bringing out its third kit in a stadium where nobody expected it. It’s almost never a marketing choice made that evening; it’s the mechanical result of a colour compatibility chart approved before kickoff.
How football went from two kits to four
The four kits, one by one
It carries the club’s identity and almost never strays from it: the traditional colors and layout, stripes, bands, or a solid color. It’s the best-selling, most recognizable, and most constrained kit, because any bold move is seen as a betrayal by some fans.
Its purpose is regulatory before it is aesthetic: to provide a clear contrast with the home kit. Hence the longstanding dominance of white, navy, and black. It’s also the kit that first embraces bold graphic choices, since its identity requirements are more flexible.
Officially, it resolves color clashes that the first two kits can’t, especially in European competition. In practice, it has become a testing ground for manufacturers: unexpected colors, references to the city or a legendary season, and designs that wouldn’t work anywhere else.
An additional kit, usually produced in limited quantities and tied to a competition, an anniversary, or a collaboration. Its sporting function is secondary; its cultural function is central: it’s worn just as much away from the stadium as inside it.
Why the third kit really exists
It’s tempting to reduce the third kit to a commercial venture, but that overlooks three distinct functions that explain why it has become so widespread.
In European competition, a club faces opponents it has never played before, with unpredictable color palettes. Statistically, two kits are no longer enough, especially for clubs whose home and away kits belong to the same color family.
It’s with the third kit that manufacturers test out ideas they wouldn’t dare try on a home kit. An idea that works there may make its way onto a main kit two or three seasons later, once fans are used to it.
A third kit with a bold design sells to people who will never go to the stadium, because it works as a garment before it works as a sign of belonging. That’s what brought jerseys closer to fashion.
The home kit belongs to the club, the away kit belongs to the regulations, and the third kit belongs to the designer.
A simple way to sum up the logic of the three kit typesWhich kit type to buy based on your profile
The four kit types serve different purposes, and the identical price masks very different lifespans in a wardrobe.
| Kit | Club identity | Everyday wearability | Rarity in the stands | Longevity |
|---|---|---|---|---|
| Home | Maximum | Varies by color | Very low | Timeless |
| Away | Average | Excellent | Average | Good |
| Third | Low to moderate | Excellent | High | Dated |
| Fourth | Often secondary | Excellent | Very high | Depends on the occasion |
One last criterion is often overlooked: the sponsor. For some clubs, the third kit also features a different main sponsor or lettering color, and sometimes it’s this difference, more than the jersey itself, that makes one version much more wearable day to day.
Concept jerseys follow the exact same logic as third kits: free designs, freed from the identity constraints of the main kit, exploring what a club might look like without its usual specifications.
Discover concept jerseysFrequently asked questions
L’organizer of the competition, based on the kits declared by both clubs at the start of the season. L’The home team generally has priority over its usual colors, and the away team changes if the contrast is considered insufficient. L’The referee can intervene right up until the last moment, especially when a goalkeeper’s kit is too similar to that of the outfield players.
No, and that’s exactly what makes it appealing. Over a full season, a third kit is usually worn for only a handful of matches, sometimes fewer, often in European away games. It’s the rarest kit in the stands, which explains why it’s become a favorite among collectors and fans who don’t want to wear the same thing as everyone else.
A fourth kit is a numbered fourth strip, often approved for competition and therefore worn on the field. A special edition may never be worn in a match: it celebrates an anniversary, a city, or a collaboration, and is intended primarily for everyday wear. The line is blurry, and some clubs use both terms for the same product.
Because the contrast rule applies to them too, and twice over: they need to stand out from both their teammates and their opponents. So goalkeepers have their own set of kits, usually in colors the club doesn’t use anywhere else, such as neon green, gray, or orange, precisely because those colors work with any match-day combination.
A system that makes sense once you know the rule
What looks like an overabundance of products is actually the result of three successive developments: a sporting rule that emerged in the 19th century, a need for TV-friendly visibility that arose in the 1970s, and a textile economy that became central in the 1990s. The third and fourth kits aren’t arbitrary inventions; they’re the latest layers in a system that has always had the same problem to solve: distinguishing two teams on a field.
There’s still the practical question of which kit you’ll actually wear. If you’re deciding between the two main kits before adding more to your collection, our comparison of the home and away kits breaks down the factors that can tip the balance.