The article notes USEF GR801.6 and provides information regarding which stirrups will be permissible and which will cease to be usable in competitions starting on December 1, 2026. That article can be found at

https://www.usef.org/compete/resources-forms/stirrup-resource-page?utm_source=SilverpopMailing&utm_medium=email&utm_campaign=The%20Insider%20-02.23.26%20(1)&utm_content=&utm_source=SilverpopMailing&utm_medium=email&utm_campaign=Sport%20News%20-%20April%20Affiliate%20Newsletter%20(1)&utm_content=

We recommend that all readers refer to that link for this important safety information.