Which compression should you choose? Start with why you want to wear the stockings, which part of your leg needs support and how the style fits. A higher mmHg value means a higher stated pressure, but is not automatically a better choice. If you have recurring swelling or a medical condition, discuss the choice with a healthcare professional.
What does mmHg mean on support stockings?
mmHg stands for millimetres of mercury, a unit of pressure. On a compression stocking, the number or range indicates the product's compression. For medical graduated compression stockings, pressure is usually specified at the ankle. Graduated compression means that pressure is highest at the bottom and decreases further up the leg.
Read the pressure specification alongside details of the style, size and intended use. A short ankle sock does not cover the same part of the leg as a knee-high stocking. A calf compression sleeve is also a different product from a stocking that includes the foot.
Support stockings, compression stockings and compression classes
The terms support stockings and compression stockings are sometimes used for the same garment. The name alone therefore does not tell you the pressure or whether the product is intended for medical treatment. Check the specifications for the individual product.
Compression classes follow different standards. A class number is therefore difficult to compare without knowing which standard is used. Overlapping ranges, such as 20–30 and 23–32 mmHg, should not be read as two distinct steps on a universal scale.
Choosing pressure, length and size
- Start with your needs. Do you want support during the day, or have you been prescribed compression? Choose prescribed stockings according to your healthcare professional's instructions.
- Check the length. Do not choose an ankle style if you need the lower-leg coverage provided by a knee-high stocking.
- Follow the style's size guide. Different products use different measurements. Medical compression stockings need to be fitted so that they provide the correct pressure.
- Read pressure and usage information together. Do not choose higher pressure because a stocking feels too loose. First rule out the wrong size or style.
Ergilo's range includes ErgiloColor, a knee-high style, and ErgiloSocks, an ankle-high style. These links illustrate the difference in length. They are not recommendations for compression suitable for a particular medical condition. Always compare the current product information and the range of support stockings and socks.
When should a healthcare professional help you choose?
Seek advice if you have recurring or unexplained swelling, a history of blood clots or need compression as treatment. Also ask before use if you have a known vascular condition, heart failure, reduced sensation, or leg wounds or skin problems. These conditions can affect which pressure and product are suitable.
Stockings should not cause pain or significant discomfort. Remove them and contact a healthcare professional if you develop new numbness, pain or changes in skin colour. Do not try to resolve these symptoms by changing pressure levels on your own.
If one leg suddenly swells, becomes warm or hurts, the cause needs prompt assessment. Read more about swollen feet and legs and when to seek medical help. Compression stockings do not replace investigation or prescribed treatment.
How long can you wear them?
Follow the product instructions and any prescription. Medical compression stockings are often worn during the day, but this does not mean every style can be worn around the clock. Keep the fabric smooth and free from folds, and follow the care instructions for your style.
