Alpaca Socks are made from 27% alpaca, 55% fine merino wool and 18% nylon for added strength. - Diabetic ribbed socks are made with non elastic top; the rib provides an upward force to keep them up. The Workwear range are known for their toughness, durability, and comfort. Lightweight and warm in winter yet cool in summer (due to their ability to absorb moisture).