Acrylic wool is a synthetic fiber made from coal, petroleum, and other chemicals. It was first developed in the 1940s as a cheaper alternative to natural fibers like wool, which were expensive after the war. Acrylic wool is also known as artificial wool or synthetic yarn. It is lightweight, soft, and warm, with a wool-like feel. Acrylic wool can be made to mimic other fibers, such as cotton, and takes color well. It is also washable and generally hypoallergenic. However, some people have reported that acrylic wool can develop a certain smell after long-term use that doesnt seem to wash out, and it doesnt have great breathability. Acrylic wool is used for garments and accessories that will be machine-washed or otherwise subject to rough treatment. It is also popular for baby items because it is soft and hypoallergenic. Although acrylic wool is cheaper than natural fibers, it has a negative environmental impact and is made from fossil fuels.