EXPLAINED: Why Some Striped Backs Are Forbidden in Football Kits
- Delta L Rule: The "Delta L" rule dictates whether striped or half-and-half patterns on a football kit can continue behind player numbers, based on a contrast measurement between colors in the Number Zone.
- Contrast Measurement: If the color contrast in the Number Zone has a Delta L value of 25 or less, the pattern can remain; if it exceeds 25, a solid-color patch is required.
- Visibility: The rule aims to maintain clear visibility of player numbers for all stakeholders while allowing teams to keep their traditional patterns when contrast allows.
If you've been watching the UEFA Champions League this week, you might have spotted something curious about striped and half-and-half kits - while some teams can keep their design behind player numbers, others are forced to use solid-color spaces. Barcelona's Blaugrana half-and-half design continues behind their numbers, but Feyenoord must use a solid white patch on their green and white shirt. What's the story behind this seemingly inconsistent rule?
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"Kit Mystery": Why Some Striped Backs Are Forbidden in Football Kits
The answer lies in the official Equipment Regulations and a technical measurement called "Delta L" that determines whether stripes can remain visible behind player numbers.
The Delta L Kit Rule Explained:
• The contrast between colors in the Number Zone must have a Delta L value of 25 or less
• If the Delta L value exceeds 25, teams must use a solid-color patch behind the number
• Delta L is measured using a spectrophotometer to ensure objective assessment
What Does This Mean in Practice?
When two colors on a striped shirt are similar in tone (like Barcelona's blue and maroon), the Delta L value is low, and the pattern is allowed to continue behind the number. However, if the stripes contrast too much (like Feyenoord's green and white half-and-half design), teams must ensure a solid background patch to ensure number visibility.
The regulation aims to ensure player numbers are clearly visible for officials, players, media, and spectators, while still allowing teams to maintain their traditional striped designs when possible.
So next time you're watching a match and notice these differences in kit designs, you'll know it's not arbitrary - it's all down to the science of color contrast!
Puma Kits Keep Ripping at the 2026 World Cup
Puma is facing significant criticism at the 2026 World Cup as multiple national team jerseys have easily ripped during matches.
Incidents involving players from Czechia, Morocco, Egypt, and Paraguay have highlighted an ongoing durability issue with the brand's latest kits - every torn shirt in the tournament so far belongs to a Puma-sponsored team.
The Puma 2026 World Cup kits incorporate the latest version of PUMA's ULTRAWEAVE “Thermoadapt” technology, which obviously is not tear-resistant enough.
The recurring wardrobe malfunctions have resulted in terrible PR for the German sportswear manufacturer and even prompted the viral resurgence of Xherdan Shaqiri's infamous quote from Euro 2016, where he joked that he hopes Puma does not produce condoms.
Trabzonspor 26-27 Home, Away, Third & Fourth Kits Released
Trabzonspor and Joma have officially released the club's new 2026-27 kit collection. The set features four distinct designs, unveiled by the Turkish club under the campaign slogan "En güzel formalar #BizdeVar".
The Joma Trabzonspor 2026-27 home kit features the thickest stripes seen during the brand's partnership with the club, presenting the classic claret and blue colors in a bold layout. The collection is completed by a solid blue away kit, a maroon third kit, and a black alternative fourth kit, offering a wide variety of options for the upcoming campaign.
Manchester City 26-27 Third Kit Leaked - Long-Sleeve Version
Footy Headlines can now leak 4 new pictures of the Puma Manchester City 26-27 third kit. Although it is a fake, the design is identical to the real one.
The kit was created using Puma's AI Creator tool in late 2024, with almost 180,000 kits designed by City supporters, and the final design was chosen from 10 finalists.
Unique Svolme Delsalma-4 LE Boots Spotted at 2026 World Cup
During the 2026 World Cup, an extremely rare pair of football boots was spotted on the feet of Japanese player Junnosuke Suzuki in Monterrey, Mexico. The boots in question are the Svolme Delsalma-4 LE, a limited-edition release from the Japanese sports brand Svolme. Suzuki's pair is one of only 1,248 produced globally, making it a highly exclusive model on the international stage. Thanks to @abcdefutbol.
The Svolme Delsalma-4 LE is designed as a touch-focused boot, featuring a premium kangaroo leather upper that provides a soft and natural feel on the ball. The brand, which is well-known in Japan but rarely seen in major global competitions, released this limited run to coincide with the tournament in North America. Suzuki’s choice to wear the Delsalma-4 LE highlights a unique piece of Japanese football equipment during the biggest international competition.
