Tom Seaver New York Mets White Pinstripe Cool Base Cooperstown Jersey (Large) Officially licensed product - Cooperstown Collection 100% Polyester Double Knit - Machine Washable - Tagless neck Made with Cool Base technology interlocking moisture-wicking fabric for a lightweight, breathable feel Pullover baseball jersey with stitched/sewn team logo at front and player's name and number on back Rounded hem with Heat-sealed jock tag above left hem