I chose Cotton Ease yarn because I didn't want it to be too hot. I did have to use a smaller needle size, probably because of the yarn I was using. I added a bit to the sleeves. After I sewed the top seams together I knitted across the ends of the sleeves for 12 rows then I switched colors and put a ribbed cuff the same number of rows as the ribbed part on the bottom. Then sewed up the sides and arms and Voila!