What Is a Compression Hose? | Therapy Stockings Explained

If you’ve been told you need compression stockings or you’re wondering whether those tight socks at the pharmacy are worth the squeeze, the answer comes down to one thing: they work by doing what your veins can’t always do on their own. The graduated pressure pushes blood upward, reducing swelling, preventing clots, and easing the ache of varicose veins. Below we break down how they actually work, who needs them, and how to put them on so they do their job instead of bunching at your heel.

How Compression Hose Works on the Leg

A compression hose creates a pressure gradient on the limb—highest at the ankle, decreasing toward the top. This gradient helps push blood in the superficial veins back into the deep venous system and toward the heart. The result is faster blood velocity, reduced pooling, and less fluid leaking into surrounding tissue.

The pressure is measured in millimeters of mercury (mmHg) and categorized into classes:

• Class 1 (light): 10–21 mmHg — over-the-counter support for mild swelling or long flights
• Class 2 (medium): 20–30 mmHg — prescription grade for varicose veins and moderate edema
• Class 3 (high): 30–40 mmHg — for lymphedema and chronic venous insufficiency
• Class 4 (very high): 40–50+ mmHg — used under specialist supervision for severe conditions

Over-the-counter stockings typically offer 8–10 or 15–20 mmHg. Anything above 20 mmHg requires a prescription and fitting by a qualified professional.

Who Actually Needs Compression Hose?

Compression stockings are indicated for a range of venous and lymphatic conditions. The most common include chronic venous insufficiency, varicose veins, leg edema, lymphedema, deep vein thrombosis (DVT), post-thrombotic syndrome, and venous ulcers. They’re also recommended for preventing DVT during long-haul travel or after surgery when mobility is limited.

But they are not for everyone. Stockings should never be used on legs with severe arterial disease unless a vascular specialist has approved it. The pressure can dangerously reduce blood flow in arteries that are already narrowed. If you have diabetes or peripheral neuropathy, get clearance from your doctor before buying compression wear.

Proper measurement is essential. A stocking that’s too loose does nothing; one that’s too tight can damage skin or restrict circulation. Measure the ankle, calf, and thigh at the widest points and match them to the manufacturer’s sizing chart. A well-rated pair fitted to your measurements makes the difference between relief and frustration.

How to Put on Compression Stockings (Without Fighting Them)

The single most common reason people give up on compression hose is the struggle to put them on. The trick is timing and technique. Put them on first thing in the morning, before you’ve been upright long enough for fluid to pool in your legs. Trim your toenails and remove any rings or jewelry that could snag the fabric.

Here’s the method that works every time:

1. Turn the stocking completely inside out, stopping at the heel pocket.
2. Place your foot into the heel pocket, making sure it’s aligned correctly.
3. Pull the rest of the stocking up over your heel and ankle, shimmying it smooth as you go.
4. Work the fabric up your calf in small increments, using rubber gloves or a donning aid for grip.
5. Smooth out any wrinkles immediately — wrinkles can create pressure points that damage skin.

Wear the stockings all day and remove them at night. If you see redness, indentations, or discoloration when you take them off, consult your doctor — the fit may be wrong. MedlinePlus’s fitting and care instructions cover the wearing schedule and hygiene basics.

FAQs

Do compression hose hurt when you first start wearing them?

Some tightness is normal for the first few days, especially at the ankle. Sharp pain, numbness, or tingling means the fit is wrong or the class is too high. Remove them and consult your fitter or doctor.

Can you wear compression hose overnight?

Standard daytime compression stockings should be removed at night. Lying flat reduces the need for compression, and sleeping in them can restrict circulation or cause skin breakdown.

How long do compression hose last before needing replacement?

Most manufacturers recommend replacement every three to six months with regular wear. Loose elastic, fraying fabric, or visible thinning means the pressure has dropped and the stocking is no longer effective.