The report says Nike developed a more breathable fabric for conditions expected to include high heat and humidity. Mesh panels are placed in specific areas to improve airflow, while the material is designed to support thermal regulation and moisture control.
That focus reflects a practical reality of tournament football. Players can spend more than 90 minutes performing repeated sprints in heavy conditions, making the shirt’s weight, ventilation and ability to manage sweat part of the wider performance equation.
The report says the fabric used in these kits is made entirely from recycled materials. Sustainability, therefore, is presented not as a separate design feature but as part of the technical brief.
Nike’s research facility near Portland reportedly includes a covered 200-metre track, a small football pitch, a basketball court and hundreds of motion-capture cameras. Thermal chambers are also used to recreate heat and humidity with athletes and robotic mannequins.
The report says the company studies how players move in the shirts and how the fabric responds to exertion. That testing process is designed to identify problems before the tournament, although reported stitching bulges on the shoulders of some France and Uruguay shirts underlined the difficulty of turning laboratory work into a flawless match product.
The visual choices go beyond colour. France’s green away shirt reportedly references the Statue of Liberty, while its inner label carries “Liberté”. Canada’s maple leaf and the red-and-white stripes on the United States kit place national symbols at the centre of the design.
The next test will come when the shirts move from launch campaigns to competitive football. Their success will be judged not only by appearance, but by how they perform under tournament pressure.