Reading's new home kit has a stripe design to represent rising temperatures.
The design on shirt sleeves and shorts was first created by a professor.
Since the club was founded in 1871, the average temperature has been shown on each stripe.
The blue stripes are cooler than average.
The club's head of commercial hoped the design would inspire more climate conversations among fans.
We are not perfect but this is the beginning. We won't aim to change the world in a day or two.
We want to reduce our carbon footprint as a football club and give our fans the chance to join us on the same journey.
The recycled plastic bottles that make up the shirt can be recycled again.
The equivalent of 13 and a half plastic bottles makes enough yarn to make a shirt.
A project to improve the club's environmental impact was launched last month.
The collaboration makes support a key theme for the season.
Reading Football Club's fans will push them on to success this season, while at the same time the players and the club will be supporting climate action and recognising the science.
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