Show up in classic game day style with a new Under Armour Boston Red Sox shirt from our shop at Lids.com. Our assortment of Red Sox shirts come in a variety of styles and sizes that all show off official Red Sox colors and graphics. From casual Boston Red Sox short-sleeve tees to long-sleeve shirts, we got you covered for any time of the season. For those hot game days, snag a comfortable Under ArmourRed Sox tank top. Be sure to check back for new arrivals of Boston Red Sox t-shirts so you're ready for every event throughout the season.