PDF of Ribbed Jersey. A PDF is a document that I send to your email account, and you print it off (if you are unsure what one is) Another pattern created by me. It has a placket front, and an easy slip stitch rib. It should be easy enough for a new knitter. There are 2 sizes on this pattern; 6-9 months and 12 months. Garment takes 3 balls of 4ply wool for smaller size and 4 balls for larger size. I have added a photo of what the PDF looks like once you have printed it out.