Available here as a convenient twin pack of 40 denier thickness knee highs iomi footnurse energising compression socks are made in a graduated compression to assist in supporting tired aching and fatigued legs by giving them a circulation boost these nylon based matte finish socks reduce in compression as they climb the leg moving blood in the right direction supporting muscles and relieving swollen feet and ankles our iomi footnurse energising compression socks have factor 10 compression