5th & Ocean MLB Boston Red Sox Women's Racer Back Tank Top, Blue, Small 50% Cotton/37% Polyester/13% Rayon Imported Machine washable Slim fit, also considered junior sizing. Be sure to order a size up for a more relaxed fit Tri blend material has a super soft feel and a vintage look Due to the nature of this fabric your team color may be slightly lighter or darker then actual team color Officially licensed by the MLB