I recently made quilts for 2 grandsons who live in the front range west of Boulder, CO. Their living room is warm due to the wood burning stove, but the bedrooms are COLD. I used Quilter's Dream Wool batting. It didn't seem thick enough to me and I worried that it wasn't going to be warm, but it is. My daughter said when she got under the quilt to read to her son it took just a minute then she was toasty warm. I had to order the batting online because I couldn't find it locally. I washed it after quilting and it didn't shrink at all. I can certainly recommend Quilter's Dream Wool for warmth.