Under Armour has appointed Christina Najjar, known as Tinx, as its newest brand ambassador. This partnership supports the brand’s continued emphasis on performance, wellness, and everyday movement.
Tinx is recognized for her honest advice, relatable content, and strong connection with her audience. She encourages women to build confidence, value themselves, and maintain balance in daily life. As Under Armour’s ambassador, she will represent the brand’s footwear and apparel, helping to engage a broader wellness-focused audience.
The collaboration launches with Summer of Outside, an event series inspired by Tinx’s long-standing commitment to spending less time on screens and more time outdoors. The initiative encourages participants to disconnect from devices, reconnect with themselves and others, and prioritize activities that support well-being.
The Summer of Outside tour will visit cities including San Francisco, Chicago, and New York City. Each event will offer movement sessions, community activities, product giveaways, and experiences that promote wellness and genuine connections. Guests can also visit Christina’s Café, a pop-up inspired by Tinx’s commitment to community.
Tinx shared her belief that feeling good should be simple. She emphasized the importance of finding joy in daily activities—whether working out, walking with friends, or spending time outdoors—and making time for self-care.
As part of the collaboration, Tinx will curate “Tinx’s Picks,” a collection of her favorite Under Armour products and everyday essentials. Throughout the year, she will partner with the brand on content, events, and storytelling that highlight how women navigate their lives both inside and outside the gym.
Under Armour executives believe Tinx’s authenticity and strong community engagement make her an ideal fit for the brand. Tyler Rutstein, Senior Vice President of Americas Marketing, stated that Tinx has earned her audience’s trust by being honest, relatable, and unapologetically herself. He added that modern performance is defined not only by athletic achievements but also by how individuals support their own well-being each day.
Beyond social media, Tinx has built a successful media career through her SiriusXM radio show It’s Me, Tinx, her New York Times bestselling book The Shift, and her novel Hotter in the Hamptons. Both books are being adapted for television, further extending her influence beyond digital platforms.
This partnership reflects a broader trend in the sportswear industry, as brands increasingly prioritize holistic wellness, mental health, community, and lifestyle experiences alongside traditional athletic performance.
Together, Under Armour and Tinx aim to inspire people to move more, spend time outdoors, and prioritize personal well-being in accessible and enjoyable ways. Through digital campaigns and in-person experiences, the collaboration encourages individuals to care for themselves by consistently showing up each day.