Dominic Thiem has been sponsored by Adidas for some time. But Thiem has not been reluctant to criticize Adidas shoes. In an interview, Thiem said that he wears two socks because that gives him a better fit.
In Tel Aviv, he was wearing black socks with white socks underneath. He said that in future matches, he will wear two black socks so it doesn’t look strange.
At the 2020 US Open, Thiem expressed his frustration with the Adidas shoes. He said at the time that the shoes are slippery and of poor quality.
Thiem is not the only one that has problems with Adidas shoes. Stefanos Tsitsipas has had problems with breaking shoe laces. Despite the criticism from players, Adidas has continued to sponsor them.