Gear up with officially licensed Seattle Mariners Caps from MLB Shop! Browse a great selection of trendy Mariners Hats for Men, Ladies, and Kids so every die-hard Mariners fan can represent their team in style. From brands like Nike and New Era, you'll have no problem finding the perfect baseball cap to wear come game-day. Ranging from authentic Seattle Mariners Snapbacks and Adjustable Hats to Fitted and Flex Hats, we have any style to choose from. Stay warm with a Mariners Beanie or show off your team spirit with Mariners Novelty Headwear. No matter how you do it, MLB Shop is your one-stop shop for everything MLB and Seattle Mariners. Remember to check out the rest of our Mariners gear to find Jerseys, T-Shirts, Hoodies, and more.