Rubie's Child Thor Muscle Chest Costume Marvel Avengers Assemble 620022 Child Thor Costume Costume includes muscle chest jumpsuit, cape & headpiece. Sizes 4-6 & 8-10 only. Made from 100% Polyester, hand wash, line dry, use cool iron if necessary. Do not dry clean. HAMMER NOT INCLUDED. The manufacturer states on the package Small (Child 4-6 for 3-4 Yrs), Medium (Child 8-10 for 5-7 Yrs) and Large (Child 12-14 for 8-10 Yrs) THIS IS NOT AN ACCURATE STATEMENT CLICK THE SIZE LINK FOR MEASUREMENTS SIZE CAN NOT BE DETERMINED BY AGE REFER TO CHART MEASUREMENTS