These hand-crocheted socks are made from a blend of natural wool (such as sheep's, merino, or alpaca wool) and synthetic fibers (usually polyamide and elastane). While the high proportion of natural wool ensures excellent heat retention, breathability, and a soft feel, the added synthetic fibers significantly increase durability by making the knit abrasion-resistant and robust. Furthermore, the synthetic fiber content ensures that the socks retain their shape, remain elastic, and do not stretch out, even after repeated wear and washing. An optimal blend for durability and comfort often consists of approximately 60-80% wool and 20-40% polyamide.