ALPACOR® yarns are created through a patented process for the yarn and the yarn manufacturing process that blends the finest Alpaca fibers with other natural and synthetic fibers. Alpacor® yarn allows us to create unique performance socks with unequaled qualities. Alpacor yarn socks are machine washable and dry Alpacor yarn socks breathe naturally with superior heat retention Alpacor is a natural transporter of moisture away from the body - vaporizes sweat Alpacor yarn socks do not retain odor Alpacor yarn socks are cool in the summer and warm in the winter Alpacor yarn socks have superior versatility for all sports and active lifestyles