My nephew Loves prime. So I got him this hoodie on a whim for him hoping it would fit he is only just turning 4 but he's a but on the big side so I got him a 5 and it fits perfect.only a little Long so he can grow into it within the year. Sleeves aren't to long hood is perfect to his face.

Awesome looking jacket in the pictures. But.....
My son is 6 and wears an 8 shirt. I always get a size up (10/12) so it will fit over another shirt and throughout the winter. Little did I know that is jacket is more of a husky/tall size 10/12. It is so big it will probably still fit him 2 years from now. He is unable to wear it at all this year. And of course it was a Christmas gift that we ordered in November and he couldn't even try it on for a month (on Christmas day) so now I can't return or exchange it. And the picture that is on it smashed together in packaging and started to peel off. And the second time we had him put it on to show the family the zipper broke. Very unhappy.

The eyes had a hole when it was delivered and the head was kinda difficult to fit. To wear it, the zipper should be half way thru, put on the hoodie then zip til up.

Warning: the cloth bleeds so be sure to wash it alone

Still despite these 3 things, my son loved wearing it and wore it the whole day. We even teased him as if he was like the little boy in daddy daycare movie who didnt want to remove his flash costume

I got a medium for my son who wears a small but the mask hood is way too tight

This is a great little hoodie. My three year old loves it. The fit is as expected - I got it in a 4T, and it fits a little bit big on my 3T kiddo.