MLB Boston Red Sox 2009 Tech Fleece, Scarlet 100% Polyester Imported Fabric mix detailing for added comfort and ease of movement. Unique front neck homeplate ribbing detail. Neckline, cuffs, and shirt-tail hem are finished with spandex binding. Available in team color. Officially licensed by MLB & worn On-Field by the Players. 260 Gsm, 100% Polyester Solid and Circular brushed mesh fleece.