Richie House Boys' Solid Pullover with V-Neck RH0866 Size 2-12Y 100% Cotton A size 4 is for the average, 3-4 year old kid, a size 8 is for the average 7-8 year old kid, a size 12 is for the average 11-12 year old kid, etc. This light, comfy cotton pullover sweater boasts a roomy fit, Cotton sweater make it comfortable to wear This handsome shirt pulls on easily overhead to provide a leisure and handsome look for little boys SIZES FOR LITTLE AND BIG KIDS ARE BOTH AVAILABLE, PLEASE CHECK THE OTHER LISTING IN THE OTHER SIZE RANGE