This cardigan is knit in the new organic cotton yarn from Knit Picks, Simply Cotton. Advertised as a sport weight, I think it is closer to fingering weight. The cotton is very soft, no splitting, and came out of a low heat dryer with out pills or too much shrinkage. I like this cotton very much, but this pattern benefits from the smooshy-ness of wool. I used size 4 needles and ended up with a 18.5 " chest circumference. The rose buttons are vintage and the hanger used in the photo belonged to my Grandmother when she was a child. Can't wait to meet you, Kate!