What wrap size should I purchase? I am 5 feet tall with an average body built.

If you are on the average size, it is recommended to start with a size 6 (4.6 meters). For plus sizes, a size 7 (5.2 meters) is recommended, and a size 5 (4.2 meters) for extremely petite. It is always better to have more length than less, so when in doubt, size up. You may find you need less length as you learn how to make your wrap jobs neat and tight. Wrapping a large toddler can require more length than wrapping a newborn which is something that you should also keep in mind. You can also visit this link to learn more about choosing a size: http://www.cottoncradles.com/wrapsizing.htm