Undyed yarn allows crafters to be creative and customize their projects by dyeing the yarn themselves. There are many types of undyed yarns made from natural fibers like wool, alpaca, and silk, as well as blended yarns. Wool is thick and warm, ideal for socks, gloves and hats. Alpaca fiber is soft like silk and comes from the alpaca animal. Silk is arguably the softest fiber and feels great against skin. Blended yarns combine properties of different fibers. Undyed yarn gives crafters flexibility to dye the yarn and make projects that represent their individual style.