The Scooter picked this yarn out all by himself:
It's Araucania Nature Wool which I enjoy working with. It's durable, not too heavy, comes in lots of colors and has enough variation to keep things interesting.
It's going to be the Child's Hooded Tunic from Knitting Pure and Simple.
I'm making it in the 2-4 size at a slightly smaller gauge. The Scooter is very thin and I want him to wear it this spring. He should get plenty of wear out of it considering he and his friends wore jackets and hats at his birthday last JUNE!