Want to get your hands on your favorite Seattle Mariners players' jerseys? Visit the Seattle Mariners Shop today and browse our full selection of authentic player jerseys and apparel. We have Majestic Cool Base jerseys so you can wear what your favorite players do. Shop for Mitchell & Ness Cooperstown jerseys and more and honor past Seattle Mariners greats. The best place to get your hands on Seattle Mariners jerseys is the Official Team Shop.