Strong compression socks are a type of specialized medical garment designed to provide graduated compression to the legs and feet. They are often prescribed or recommended by healthcare professionals to individuals who have certain medical conditions, such as circulatory issues, varicose veins, lymphedema, or to prevent deep vein thrombosis (DVT) during long periods of inactivity (such as long flights).

Compression socks work by applying varying levels of pressure to the legs, with the highest pressure typically at the ankle and gradually decreasing as the sock extends upward. This graduated compression helps improve blood circulation by assisting the veins in returning blood to the heart more efficiently. It can also help reduce swelling and discomfort in the legs and feet.

Strong compression socks usually have a higher level of pressure. They are designed to provide more intense compression and are often used for more severe cases of circulatory issues or to address specific medical concerns. The pressure levels of compression socks are measured in millimeters of mercury (mmHg). Common compression levels include:

• Mild (8-15 mmHg): Provides minimal compression, suitable for general leg comfort and prevention of mild swelling.
• Moderate (15-20 mmHg): Offers moderate compression for people who are on their feet for extended periods, have mild circulatory issues, or want to prevent minor swelling.
• Firm (20-30 mmHg): Stronger compression suitable for those with moderate to severe circulatory issues, varicose veins, or post-surgery recovery.
• Extra Firm (30-40 mmHg) and higher: Intense compression for more serious medical conditions like severe edema, venous ulcers, and severe varicose veins.