Philadelphia Eagles Jacket Youth Reversible Zip Jacket Reebok On Field No Size

This looks like a youth jacket.  There is no size tag, maybe because it is reversible? 

Measurements:

20” long from shoulder to hem

17.5” across from armpit to armpit

17” sleeve length

16.5” across from shoulder to shoulder

Overall good vintage condition.  There are no holes or rips. Wrist cuffs look great and have lots of elastic stretch.

There are a few stains on the jacket, though I did not try to wash.  Also there is an area of minor loose stitching.  

See photos for further description.