- 50% Cotton / 50% Polyester - Vintage Kansas City Chiefs Baseball Jersey w/ Embroidered Detail. - Size on tag: S - Pit-to-Pit: 20" - Front Length: 25" - Sold As-Is, Normal Wear & Tear.  Some Color Bleed Underpit. - Only One Available WESTSIDE STOREY VINTAGE | THE GAME KC CHIEFS JOE MONTANA BASEBALL JERSEY