San Jose Earthquakes Quakes Black Shirt Size Youth L (14/16) MLS.  The inside fabric content tag is missing, but I would guess this is a Cotton/Polyester blend.  Since not all sizes are created equal, I have included actual garment measurements.  Compare with a shirt you own and it is the next best thing to trying it on.  Chest=37".  Back Length=26".  Sleeve Length=9".  Please contact seller if you require additional measurements or more info so that you can buy with confidence.  Excellent pre-owned condition.  I can't see any signs of wear at all.