As usual I couldn't narrow down what colors I wanted to use, so I picked pretty much them all (except the brown, it would blend too much into my couch).
The two blue pillows are 20" x 20" and the red and yellow pillows are 18" x 18". I bought my down inserts at Crate and Barrel.
Since these fabrics are a Home Dec weight, I think they will hold up nicely to the abuse that comes at the hands of a 4 and 6 year old.
Overall, I'm quite pleased with how they turned out!