MLB Tom Seaver #41 Mets Cooperstown Replica Jersey 100% Polyester Imported This Cooperstown Fan Replica jersey features authentic full or left chest team name/logo printed tackle twill decorations, full back player name and number in printed tackle twill, and varying braid details. Includes a team specific Cooperstown woven locker tag. Officially licensed by Major League Baseball. Available in Official Cooperstown team colors and logos. Made of 100% polyester double knit, 225 Gsm.