For anyone who might be interested, I used the pattern from Roo Designs and modified it to add an opening at the shoulder seam. The yarn is Paton's pure merino wool which should keep Kabu very warm :-)
I made him pose in it first thing this morning.
Though I thoroughly enjoyed making this for him, I wish I had made it a little bigger in size. I blindly followed the recommended size for a 12 month old instead of taking actual measurements. The result is that the pullover fits him just right and will probably only get a month or two of use before Kabu grows out of it. Hopefully the weather will change by then so he doesn't need a sweater anyway (wishful thinking!).
This happens to be the third hand-knit sweater made especially for Kabu. The first one was a baby Yoda sweater that I had made when I was pregnant with Kabu. Here's a picture of him wearing it when he was 2 days old :-)
And the second one was a beautiful sweater knit by Kabu's dadi. This one is a pattern from Knitting for baby and has been lovingly worn by him for the past three months.
With a model like this, who wouldn't want to keep knitting?