Today, in the 2026 World Cup final at MetLife Stadium in East Rutherford, New Jersey, Argentina and Spain have both confirmed they will play in their home shirts: Argentina in its familiar sky blue and white stripes, Spain in vivid red. The two kits sit close enough in tone that FIFA had to sign off on the contrast, but neither federation was ever likely to switch to its alternate for the biggest match of the tournament. That leaves Argentina's black away shirt hanging on the rail, worn only once this World Cup, and it may be the more interesting garment of the two.

The away kit is built on a black base carrying an all-over pattern of swirling blue and white florals and climbing vines, rendered in what Adidas calls Lucid Blue and Blue Burst. It is not decoration for its own sake. The pattern is drawn directly from fileteado porteño, the ornate scrollwork and lettering style Buenos Aires sign painters and cart decorators developed in the late nineteenth and early twentieth centuries, recognized by UNESCO as an Intangible Cultural Heritage of the city in 2015.

Fileteado grew out of the workshops of European immigrants, many of them Italian, who painted horse-drawn grocery carts and later buses, shopfronts, and tavern signs with vines, flowers, and faux-ribboned lettering, working on the principle that no surface should be left bare. Coverage of the kit ties its swirl-and-vine motifs to that tradition and to the immigrant neighborhoods, San Telmo among them, where fileteado painters worked; the jersey's own typography borrows the same gothic and cursive lettering fileteado artists used on shopfronts.

On the shirt, a monochrome AFA crest sits on the left chest opposite the gold FIFA World Champions badge Argentina wears for winning in Qatar in 2022, the Adidas Trefoil stands in for the usual white performance mark, and a custom Argentina wordmark is set over the Sol de Mayo, the national sun symbol, just below the collar on the back. It is cut from lightweight jacquard fabric with Climacool moisture management.

The knockout rounds were not as tidy. In the round of 32, Argentina drew Cape Verde, the smallest nation by land area and the second-least populous ever to reach a World Cup, playing in its first tournament. Cape Verde held the champions to 1-1 after 90 minutes before Argentina won it 3-2 in extra time, Lisandro Martinez scoring and an own goal off Cape Verde's Borges settling a match that came close to the biggest upset of the tournament. In the round of 16, Egypt led 2-0 inside an hour before Cristian Romero, Messi, and a stoppage-time winner from Enzo Fernandez turned it around, 3-2. The quarterfinal against Switzerland went to extra time again, Julian Alvarez scoring in the 112th minute as Argentina won 3-1.

FIFA introduced a new sleeve badge system for this World Cup. Every competing nation wears the tournament logo on its right sleeve, in white or black depending on which reads better against the shirt, except for the seven former champions in the field: Brazil, Germany, Argentina, France, Spain, England, and Uruguay, who wear it in gold instead. As the reigning champion, Argentina layers on a second gold badge, the FIFA World Champions mark, at the center of the chest.

Players carry their own patches too. A Legends patch, a small silhouette above the player's name and flag, marks anyone reaching a fifth or sixth World Cup, which is how Messi's sleeve marks this tournament as his sixth. First-timers wear a Debut patch instead, fixed with adhesive so it can be peeled off after the player's first match and turned into a collector's card under FIFA's new licensing deal with Fanatics. Spain's Lamine Yamal wore his in the group stage; by today's final it will already be on its way to becoming a trading card.