Under the deal, the company will now become the official clothing partner of the WSF from January, as well as the official shoe partner.

An online store will be opened by the governing body, which will sell official products including Teuton footwear.

The first official clothing collection will arrive no later than January, the WSF said, and will also be available to buy online.

"It is a pleasure to extend our collaboration agreement with the Teuton brand,"  said WSF chief executive William Louis-Marie.

"We greatly appreciate the support that the brand will provide to our squash community and to many programmes the WSF have been developing during this new contractual period. 

"It will be good to have as a reference of our official product the brand performance that so many worldwide players have been showing wearing Teuton shoes."

The WSF and Teuton initially inked a three-year deal in 2018.

Javier Rodriguez Cepeda, the managing director of Teuton Sports, added: "I am very proud to have the opportunity not only to continue but to expand collaboration with the most important and prestigious entity in our beloved sport of squash. 

"Teuton will continue focusing on bringing the best by supplying popular style, durable and quality sports products.

"Being the official shoes and clothing of the WSF is more than enough reason to continue to innovate and strive in being the best sport outlet in the world."