Help prevent Deep Vein Thrombosis with these graduated compression socks. Clinically proven to improve blood circulation, they are designed to help prevent the adverse effects of long haul flights or lengthy car, coach or train journeys. Whilst there is no way of absolute DVT prevention, recent research has shown that this type of product reduces the risk significantly. Cotton Rich for comfort and ribbed to look like ordinary socks they are also useful for swollen ankles and tired aching legs - our buyer often wears them when attending Trade Fairs. Unisex. Shoe sizes: - Small: 3-6 - Medium: 6-9 - Large: 9-12