Circulation Health sock. These socks are designed to be worn by people that suffer from circulation problems or swelling of the lower legs, it provides support and comfort to the foot, superior wicking promotes foot health. Ultra fine, anti-static fibres for more comfort and blister protection. Antibacterial fabric which eliminated foot odour. Composition: 46% Bamboo / 20% Bamboo Charcoal Fibres / 28% Cotton / 6% Elastane.