Alpaca Socks Soft & Warm Alpaca Socks in natural Black, Brown, Cream and Gray. Each hand-made pair is unique, with varying patterns and shades of color. These knit socks stretch to fit most adult foot sizes. Alpaca is a wonderful fiber, warmer by weight than wool and soft to the touch.Our Alpaca Clothing and Accessories are made by hand in the Altiplano of southern Peru. All the thread is hand-spun and all the colors are natural.