Official baseball Baby jackets are here at Fanatics.com so you can show your support for your team throughout the year. No matter the weather, an authentic baseball jacket will keep you warm and game day ready. Our Baby MLB jackets are available in a variety of styles for every fan, including windbreakers, MLB starter jackets, throwback jackets, full-zip jackets, pullover jackets and much more. A new baseball varsity jacket would make a great addition to your game day wardrobe. Every fan can find a MLB jacket that fits their style when that shop at Fanatics.