MLB Shop Canada is fully stocked with officially licensed Mariners hats available in a variety of styles from the best brands to fit every fan. Add to your game day look with a new Seattle Mariners hat featuring official team graphics so you can put your team pride on display while cheering on your team. From Mariners snapbacks and adjustable hats to Seattle Mariners beanies and fitted hats, we have the perfect Mariners cap for you or a fellow fan. Browse our selection of trendy Seattle Mariners bucket hats or visors to add to your wardrobe. Go with a retro look when you snag a throwback Mariners hat and get ready for every event by checking back for new arrivals of Seattle Mariners baseball hats from MLB Shop.