Some synthetic yarns can be irritating on the skin, making them unsuitable for knitting scarves. We mentioned materials like acrylic, wool, and cotton for yarns specifically because of their softness and that they make more comfortable and cozy end products. Other materials may not provide the same level of comfort as these materials.
Another important feature to consider is the warmth certain fabrics provide. For maximum insulation, wool and acrylic yarns are best. Scarves made from other materials may fail to protect you from the harsh lash of winter winds.