From the Louet Site:
Eastport Alpaca Yarn, a perfect blend of Alpaca fiber & Merino for strength, warmth and durability. The natural Alpaca blended with the dyed Merino gives a beautiful multi-dimensional color. Eastport Yarns are American made, using Alpaca fiber grown on over 25 different family farms in the US. The yarn is worsted spun, meaning that the fibers are aligned by a combing process that keeps the yarn thin and sturdy. This way you can use a variety of needles and always get a great result.