Parker
is a Unisex Baby Knitting Pattern for a jumper in 2 sizes to fit a baby with an 18" & 20" chest. It is made using DK yarn and 4mm needles.
It can also be made with DK yarn using 3.75mm & 4.5mm needles to make it a size larger, or Aran yarn using 4mm & 5mm needles to make it approximately 2 sizes larger, by following the pattern exactly with the appropriate size needles.