Little and big boys will love this Mario game on tee! The shirt is royal blue and 100% cotton. Mario and Luigi graphics are on the front and the boys are high fiving each other. Get this shirt for your Mario brother's fan! Read the following for sizing information- Amazon's sizing is done by years, however, this tee is regular little and big boys sizing. Little boys' sizes 4, 5/6, 7 and big boys sizes 8, 10/12 and 14/16. Sizing is shown as follows- size 4 is shown as 4T, size 5/6 is shown as 5-6 years, size 7 is shown as 7 years. Big boys' size 8 is shown as 8 years, size 10/12 is shown as 10-12 years, and size 14/16 is shown as 12-14 years