Circulation Sock Crew - GreyInfrared Circulation Socks The Infrared Circulation Socks relieve pain and discomfort for those suffering from poor circulatory conditions. The unique design features a non binding, loose weave for a relaxed fit, and these socks are intentionally designed to be less constrictive rather than functioning as compression socks. For a perfect fit, consider sizing down if your shoe size is at the lower end of the provided range. Not a compression sock