Actually, this is not 1800 count wool. However, I will say this, it is most difficult to just buy a bottom sheet in oppossition to goofing around and buying a full sheet set. Thats a plus, that and this bottom sheet was very well  made! And it fit perfect, and....it is soft as the day grows long leading to restful sleep. Nice product, great price, and great shipping and tracking and communications with Wayfair. Yes, I would buy it again, many times in fact, but it is so well made, I will not have to do that.