Compression socks are one of the most commonly recommended products in podiatry and sports medicine — used for everything from managing swelling and improving circulation to supporting recovery after exercise and reducing fatigue during long flights. But with dozens of options on the market, choosing the right pair depends on what you're using them for.
Here's a podiatrist's guide to what compression socks actually do, who benefits from them, and which type suits different needs.
How compression socks work
Compression socks apply graduated pressure to the lower leg and foot — tightest at the ankle and decreasing toward the calf. This gradient helps push blood back up toward the heart, improving venous return and reducing pooling in the lower limbs. The result is less swelling, better circulation, and faster recovery from activity or prolonged sitting and standing.
The level of compression is measured in mmHg (millimetres of mercury). Higher numbers mean firmer compression:
- 15–20 mmHg — mild compression for everyday wear, travel, and mild swelling
- 20–30 mmHg — moderate, medical-grade compression for significant swelling, varicose veins, and post-surgical recovery
- 30–40 mmHg — firm compression, typically prescribed for chronic venous conditions
Who benefits from compression socks?
Travellers
Long-haul flights and car trips mean hours of sitting with minimal leg movement. Blood pools in the lower legs, causing swelling, discomfort, and increased DVT (deep vein thrombosis) risk. Compression socks are one of the most effective preventive measures — recommended by most airlines and travel health guidelines for flights over 4 hours.
Workers on their feet all day
Nurses, retail workers, hospitality staff, tradies and warehouse workers who spend 8–12 hours standing or walking often experience heavy, aching legs by the end of a shift. Compression socks reduce venous pooling and leg fatigue. Paired with supportive insoles like the Formthotics Everyday Workfit, they can significantly improve end-of-day comfort.
Runners and athletes
Compression socks are widely used in distance running, cycling, and team sports for both performance support and post-exercise recovery. The compression aids venous return during exercise and may reduce muscle vibration and perceived fatigue. Post-exercise, they help accelerate recovery by improving blood flow to fatigued muscles.
People with circulation issues
Chronic venous insufficiency, varicose veins, lymphoedema, and post-surgical swelling all respond to graduated compression. For medical conditions, the compression level should be guided by your GP, vascular specialist, or podiatrist.
Pregnant women
Swollen feet and ankles are common during pregnancy, particularly in the third trimester. Mild to moderate compression socks can help manage this swelling. Consult your healthcare provider before using compression hosiery during pregnancy.
Compression socks vs compression foot sleeves
Compression socks cover the foot and extend up the calf, providing full lower-leg compression. Compression foot sleeves — like the OS1st FS6 Performance Foot Sleeve — cover only the foot and ankle, providing targeted arch and heel compression without the calf component. Choose socks when you need full lower-leg support (swelling, circulation, travel, recovery). Choose foot sleeves when the issue is specifically in the foot (plantar fasciitis, arch pain).
What to look for in compression socks
- Graduated compression — tightest at the ankle, decreasing up the leg. This is what drives the circulatory benefit.
- Correct sizing — compression socks need to fit properly to work. Too loose and they don't compress; too tight and they can restrict circulation. Measure your calf circumference and shoe size before ordering.
- Moisture-wicking materials — especially for sport and work use, where sweat management matters.
- Antimicrobial treatment — silver-ion or similar treatments help control odour during extended wear.
- Seamless toe construction — reduces friction and blister risk, particularly for runners.
Our compression sock range
We stock compression socks from brands trusted in Australian podiatry and sports medicine. Browse the full range in our Socks & Compression collection.
For foot-specific compression, see the OS1st FS6 Performance Foot Sleeve — targeted compression for plantar fasciitis and arch pain, worn under socks inside shoes.
When to see a professional
If you're experiencing persistent leg swelling, varicose veins, skin changes on the lower legs, or leg pain during walking, see your GP or podiatrist before self-prescribing compression. These symptoms may indicate an underlying vascular condition that needs assessment. Compression socks are effective as part of a management plan, but they don't treat the underlying cause.