Your mission if you choose to accept it. Your son will love this out-of-this-world themed t-shirt! 
 
General Youth Sizing Guideline:
XS = 2-4, S = 6-8, M = 10-12, L = 14-16
 
Durable, long lasting heat transfer set on a Comfort Colors 100% ringspun organic cotton t-shirt. 
 
We're proud to use Comfort Colors base t-shirts as their Pigment Pure™ technology uses 3 times less water, takes 40% less process time and consumes less energy.