What are the cooling jackets used by Manchester United and how do they work?

Manchester United are using cooling jackets in a bid to help their players deal with the heat during their Premier League Super Series campaign in the United States.

Cooling jackets have been around in various forms as early as the 1950s and 60s, first used by the military and have since been used in a range of sports including Formula 1, cycling, tennis and rowing.

They are designed to reduce an athlete's core and skin temperature, with studies showing it can lead to an improvement in endurance, performance and limit the risks of heat stroke and heat exhaustion.

The type currently used by United are from a range by kit manufacturers Adidas that were launched earlier this year.

Those cooling jackets are being worn by players following warm-ups and at half-time of their three matches in the United States.

Players at the 2025 Club World Cup this summer experienced extreme heat in a number of matches. Multiple cooling breaks were taken, as well as some stadiums installing large mist fans on the sidelines.

Borussia Dortmund's substitutes also spent the first half of their group stage match against Mamelodi Sundowns sat in the changing room to avoid the heat.

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