Well, thought I would pass this on. Last winter I purchased a twin size (72 by 90) polyester blanket at Walmart. Price was $5.00. It's quite thick, looks and feel like a woolen blanket. I purchase it to make a bed for my small dog for she is allergic to foam. I made several covers, and folded the blanket, slid it in the cover. I figured it would shrink and that was ok, for it still would make a thick bedding. Well lo and behold it didn't shrink a bit. It's been washed many times, and still looks great. I do have a front loading machine, don't know if that would make a difference, such as get it out of shape. So went back to Walmart and purchased three white twin size blankets ( they had different colors and some with a pattern) and will use them in my lap quilts, for I usually make them around 52 by 64. Those quilts will go North in the cold country, and I'm sure they will be nice and warm.