Richie House Little Boys' Long Sleeve T-Shirt RH1957 95% cotton 5% spandex A size 2/3 is for the average 2-3 year old boy, a size 5/6 is for the average 5-6 year old boy, a size 9/10 is for the average 9-10 year old,etc Cotton lends both comfort and durability, addition of spandex makes for a unique texture and drapes softly against the body for a comfortable fit and feel Front contrasting letters print,long sleeve,crew boat neckline SIZES FOR LITTLE AND BIG KIDS ARE BOTH AVAILABLE, PLEASE CHECK THE OTHER LISTING IN THE OTHER SIZE RANGE