A word of caution: One should not make bedding or PJs out of synthetic materials, no matter how nice the "feel". Stick to wall hangings, runners, and such. In case of fire or hot spill they can melt and stick to the body. Natural fibers will turn to ash, not much protection in case of severe heat, but better than having to peel melted plastic off of burned flesh. If you are wondering if your fabric is all cotton, take a small piece and touch a flame to it. The burnt edge will be ash and crumble away if cotton, but will have a crispy, stiff edge if synthetics are combined with it. I haven't done this with wool, but if it's in a thick layer, it is flame retardant (not fire proof).