Vancouver Canucks Hockey Blue T-shirt tee Size Youth M (10/12) NHL.  80% Polyester, 20% Cotton.  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=36". Back Length=23".  Sleeve Length=8.5".  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.