There are many benefits of Alpaca wool. It is warmer than 100% wool; yet lighter due to its hollow fibers. The Fleece Lined Mountain Striped Alpaca Hat makes perfect use of this unique material by creating a versatile hat that is suitable for both cold winters and breezy days. And because it comes in multiple colors; you can find the perfect hue for any outfit or occasion. Composition: 50% Alpaca / 50% Acrylic.