The UK Olympic Committee is considering whether to allow its athletes to wear coloured or polyester fabric, according to a report in the Sunday Times.
The decision is part of the wider overhaul of the Games that aims to cut costs and simplify logistics.
The UK is also exploring the use of cotton fabrics in the Winter Games in Pyeongchang, South Korea, and the Summer Games in Rio de Janeiro.
The changes are expected to save the taxpayer hundreds of millions of pounds in 2020, according the Sunday Press.
UK officials are also considering the possibility of using fabrics that do not contain cotton fibers.
The government is currently reviewing the way the Olympics are run, the report said.
The committee is expected to make a decision on the change in the next few days, but will need to consult the Royal College of Physicians, the Sunday Telegraph reported.