This is a simple, bottom up, in the round jumper that incorporates the Dalek theme from Doctor Who. Size is around 2 years, but with different needles and fiber choices it can go up or down a bit. It’s not designed to be a snug fit, so a shirt can be worn under it, which makes gauge less important.

Tips:
Carry up CC yarn so that there are few ends to weave in.
For a good video on the bobbles, I like this one from planetpurl on youtube