I was disappointed to find I could see through this item when holding it up to light.  The label also states it is 20% rayon, but the item title refers to it as a "Classic Wool Warm Thick Fashion French Beret." The one size is also extremely tight on my 7.5 head size.

I purchased a second Beret from local army surplus for a couple of dollars less, and it is quite thick, and size adjustable. Go that route folks.

Not impressed with this item!