Copper Collar 5k 2026 T-shirt

Can't make it to the starting line? You can still be part of the mission.

The Copper Collar 5K Commemorative T-Shirt honors the proud legacy of America's Navy divers and celebrates our nation's 250th Birthday. Featuring a striking vintage diving helmet emerging from the sea beneath a distressed American flag, this exclusive design captures the spirit of courage, service, and maritime heritage that inspired the Copper Collar 5K.

Whether you're a former diver, active-duty service member, veteran, military supporter, maritime history enthusiast, or friend of the Man in the Sea Museum, this shirt is a great way to show your support even if you can't attend the event in person.

Every shirt helps support the mission of the Man in the Sea Museum: preserving diving history, inspiring future generations through STEM education, and honoring the pioneers who pushed the limits beneath the sea.

It's made of 100% ring-spun cotton and is soft and comfy. The double stitching on the neckline and sleeves add more durability to what is sure to be a favorite!

• 100% ring-spun cotton
• Sport Grey is 90% ring-spun cotton, 10% polyester
• Dark Heather & Heather colors are 65% polyester, 35% cotton
• Graphite Heather is 50% polyester, 50% cotton
• 4.5 oz/yd² (153 g/m²)
• Shoulder-to-shoulder taping
• Quarter-turned to avoid crease down the center
• Blank product sourced from Bangladesh, Nicaragua, Honduras, Dominican Republic, Haiti or Guatemala

Disclaimer: Due to the fabric properties, the White color variant may appear off-white rather than bright white.

Size guide