When the final out was recorded and the celebration erupted on the field, this is the shirt that defined the moment. The Mariners American League Champions 2025 Shirt is more than just a piece of apparel; it’s a wearable trophy, a testament to decades of dedication. It’s the same championship energy seen in the locker room, now available for the fans who supported them every single step of the way.
Seattle Mariners American League Champions 2025 Shirt | Show Your Support
This commemorative shirt features a stunning, two-sided design on a versatile and stylish charcoal grey base.
On the Front: A clean, bold, diamond-shaped graphic proudly displays “AMERICAN LEAGUE CHAMPIONS” and “SEATTLE 2025,” making your allegiance clear.
On the Back: The celebration continues with a larger, detailed design. It features the American League Championship trophy graphic, the “CHAMPIONS” title, the “20 25” year, and the iconic Mariners “S” logo, letting everyone know exactly who runs the AL.

This 2025 ALCS Champions shirt is the ultimate way to commemorate the Mariners’ legendary playoff run. Crafted for the dedicated fan, this shirt captures the euphoria of their pennant-clinching victory and proudly proclaims Seattle’s new status as baseball royalty. As the M’s charge into the World Series, this is the shirt you’ll want to be wearing, the one you’ll keep forever to remember the year they finally conquered the American League.
Product Specifications:
- Classic T-Shirt G500: Made from 90% cotton and 10% polyester for breathability and comfort.
- Premium SS T-Shirt NL3600: Heather Gray blend of 90% cotton and 10% polyester; pre-laundered for a soft finish.
- Pullover Hoodie G185: Crafted with 55% cotton and 45% polyester for a cozy and durable feel.
- Crewneck Sweatshirt G180: Features a blend of 55% cotton and 45% polyester, perfect for casual wear.
- Long Sleeve T-Shirt G240: Ash is 99% cotton, 1% polyester; Sport Grey 90% cotton, 10% polyester; Dark Heather 50% cotton, 50% polyester.
- Jersey Tank 3480: 100% combed and ringspun cotton for softness and long-lasting quality.
- Sleeve Raglan NL6051: 50% polyester, 25% combed ringspun cotton, 25% rayon jersey for a premium blend of comfort and stretch.
- Ladies T-Shirt: 100% preshrunk cotton; Ash Grey is 99% cotton, 1% polyester for a perfect fit.