On April 22, the Nashville star posted a video of Wladimir, a Ukraine native, to Instagram with the caption, "A message from #WladimirKlitschko on the ground in #Ukraine."
"Thank you to Hoplon international for all the help and support that we have received here in Ukraine," the former professional boxer said in the video. "Thank you for the med kits and the bulletproof vests they're going to save our lives. Thank you so much. And please keep supporting us."
The former couple share a 7-year-old daughter named Kaya.
On February 24, Russia invaded Ukraine. The next month, Hayden established Hoplon International in March to raise money for medical supplies and protective gear for those fighting in the Eastern European country. The nonprofit collects donations that "immediately fund life-saving supplies, from body armor to combat medical kits," reads its mission statement. "Our networks inside Ukraine allow us to agilely assess the most critical resources, and to coordinate their distribution."
Hayden, 32, previously used her platform to raise awareness for Ukraine in February, posting a photo of Wladimir to her Instagram with a message about the war. "I'm praying for my family and friends there and everyone who's fighting. I wish you had more support and I wish I was there fighting with you!"
Her daughter Kaya typically lives with Wladimir in Ukraine. When a fan expressed concern for Kaya's safety in the comments, Hayden responded, "She's safe and not in Ukraine."
She added in the post, "For now, I ask for those of us who can't be there to stand shoulder to shoulder in solidarity with the people of Ukraine and show your support for #democracy."