The sweater arrived today. 100% wool. No rayon as the sweaters of old had. This is definitely a sweater for COLD weather--very cold. Wouldn't you know, today is the warmest day that we've had in weeks. (Nearly 60 degrees.) I certainly could have used this sweater last week! This is a sweater for outdoor wear. Even though it is 100% wool, the label says "dry clean only". I ordered a medium, and it is very roomy. I have a 39 inch chest and a 32 inch waist. I wonder if I could have gotten by with a small? A beautiful sweater that will last a long, long time.