Your source for official Seattle Mariners apparel and gear for men is the MLB Shop. We have authentic Cool Base jerseys from Majestic for all your favorite Seattle Mariners players. Browse all the latest styles in hats from all the top brands like New Era, '47, Nike, and more. You'll also find Seattle Mariners locker room t-shirts, hoodies, polos, jackets, Spring Training gear, and more. We carry the widest range of accessories, too, from wallets to golf gear to fan gear for your game room, car, office, or home. Get all the top Seattle Mariners men's gear from MLB Shop so you can support your team properly.