Avengers Initiative Boys Iron Man Mark 42 Costume Jumpsuit & Mask Medium (7-8)

I bought the size 6-7 for my 5 yr old grandson. He weighs 40 pounds and is 43 inches tall. The costume fits him very well through the body, but is a little long in the legs, so he may be able to wear it next year as well. There are some velcro "buttons" on the back that will stick to the suit even without the other half of the button, so use caution when taking the costume off and putting it away, because it can cause a "run" in the costume. My grandson is very happy with his new costume.