[Lightning McStitch]

@peggyw all I can suggest is this: Measure the bare chest of the intended kid, then measure again with all the expected underlayers.
Remember, the jacket is sized to have the quilted vest underneath.
If you’d kid will wear a singlet, top, sweater or two, quilted vest and jacket thdn you’ll probably need all that ease.
If you’re making this as a lightweight spring coat to go over a t-shirt, then you won’t need the ease.
In my experience, by using the child’s chest measurement you get a lovely outerwear coat that can be worn over everything else.
As my kids have grown, it gets snug with the quilted vest underneath, but by then the sleeves are getting shorter.

[Peggy]

Thank you. This is most helpful.