15-20 vs 20-30 mmHg Compression Socks
15–20 mmHg is the everyday over-the-counter tier — right for all-day standing, travel, and mild end-of-day swelling. 20–30 mmHg is firmer and more associated with existing varicose veins or persistent swelling; get a doctor's fitting before going that firm. Whichever tier, size by calf circumference (not shoe size alone) and make sure it's graduated — tightest at the ankle.
The one thing to know: 15–20 mmHg is the starting tier for all-day standing or mild end-of-day swelling; 20–30 mmHg is firmer and more associated with existing varicose veins or persistent swelling. Anything beyond 20–30 mmHg — or any existing vein/circulation condition — calls for a doctor's fitting, not a self-selected pair.
Which tier for which situation
- 15–20 mmHg: nurses, retail, teachers, long flights, mild swelling, pregnancy comfort (confirm with your OB). A comfort choice you can self-select.
- 20–30 mmHg: existing varicose veins or persistent swelling. Firmer and genuinely snug — best chosen with medical guidance, not by shoe size.
- Above 20–30 mmHg, or any diagnosed circulation condition: a doctor's fitting, not an off-the-shelf pair.
Note: these are comfort products for the tired, heavy-leg feeling — they are not a medical treatment for vein disease. If you have diabetes, poor circulation, or diagnosed vein problems, talk to a clinician before choosing a tier.
Physix Gear Compression Socks 20–30 mmHg
20–30 mmHg, graduated, nylon/spandex, knee-high
Firm graduated compression with a reinforced heel/toe that holds up to daily wear.
Best for: Long days on your feet (standing/retail)
Watch out: 20–30 mmHg is a firmer tier that can feel too tight for beginners; existing vein/circulation conditions warrant a doctor's fitting first.
Check price on AmazonSockwell Elevation Merino Compression Socks
15–20 mmHg, graduated, merino wool blend, crew height
Merino blend breathes and regulates temperature better than synthetic-only socks on a full travel day.
Best for: Travel and all-day wear where breathability matters
Watch out: Wool costs more and can feel itchy to some; 15–20 mmHg won't feel like 'enough' if you actually need 20–30.
Check price on AmazonFrequently Asked Questions
15–20 mmHg is the lighter, over-the-counter tier for everyday standing, travel, and mild end-of-day swelling. 20–30 mmHg is firmer and more often used for existing varicose veins or persistent swelling — it's wise to get fitted by a doctor before jumping straight to 20–30 mmHg.
Graduated means the pressure is tightest at the ankle and gradually decreases up the leg — the design that actually supports circulation. A sock that's uniformly tight all the way up is not graduated and works differently.
No — over-the-counter compression socks are for all-day comfort and reducing the tired, heavy-leg feeling, not medical treatment. Anyone with diagnosed vein disease, poor circulation, diabetes, or persistent swelling should be sized and cleared by a doctor first.
Sizing is based on calf circumference and shoe size, not shoe size alone. Measure the widest part of the calf — a sock too small there can be uncomfortable or counterproductive, and one too loose won't apply real graduated pressure.
15–20 mmHg is the commonly suggested range for air travel to support circulation during long sitting — a comfort choice, not a substitute for moving around the cabin periodically.