This pattern is so freaking cute for little boys. And easy. I highly recommend it.
I love the shoulder detail, plus I added some detail of my own by making contrasting stripes and ribbed edging.
I made this vest for Amy's son, Alex, after she requested more orange things for him. I used bits of yarn leftover from various other projects, hence the stripes. I also overcame my fear of knitting in the round using double-pointed needles- I used them for the ribbing and it worked out pretty well!
I used size 8 needles and made the 2T size from the pattern, but I think it may be a little bit larger then 2T in reality based on my needle choice.