Be the definition of Mariners style at the next game with an officially licensed Custom Jersey from Mariners Shop. Our exclusive Custom Jerseys come in sizes and styles for all your favorite baseball fans, so you can pick one up for your own collection or pick one up as a gift for a fellow fan. Find the latest Custom Jersey and show off your bold new team gear while representing your favorite player on the next gameday. With multiple styles in Mariners Jerseys and Uniforms, Mariners Shop offers an unforgettable design for every fan. With Seattle Mariners Custom Flex Base & Cool Base Jerseys for Men, Women and Kids, Mariners Shop is your top spot for essential Mariners gear for the next event.