The tag on the coat says it is 100% camel hair with a 100% polyester lining. It certainly feels like camel hair; it's not nearly as coarse as wool or a wool blend. I have had experience with other Jonathan Michael coats, and have always found them to be warm enough for our winters. Another "plus" is that they are not heavy to wear.
According to information listed under the product specs tab:
Fabric: 100% camel hair
Lining: 100% polyester