One Piece Baby Jacket is eleven years old, this year. The pattern has been revamped. New sizes added, crisp neat decreases and garter stitch border.

The original pattern PDF remains available.
A photo tutorial can be downloaded with the pattern.

This little jacket is knit in one piece.
It is knit from the bottom up and finishes at the cuffs.
This means that the sleeve length can be adjusted.

New January 2022 pattern.
Actual measurement.
Baby, 6mths, 1-2yrs, 2-3yrs, 3-4yrs
18(20,22,24,26)ins
46(51,56,61,66)cm

Yarn 130(230,250,300,300)g of dk.

There is minimal making up, as only the top edges of the sleeves require sewing. The sleeves could also be knit in the round.

This jacket uses mitered decreases.
I have done the maths for you.

Simply follow one row at a time.
Good luck and enjoy!!