If you've ever looked at compression socks and wondered what "mmHg" means — or why some are 15-20 and others 20-30 — you're not alone. Here's the plain-English version, so you can pick the right pair with confidence.
What "graduated compression" actually means
Graduated compression socks are snuggest at the ankle and gradually ease up toward the calf. That gentle, structured squeeze is what makes them feel supportive through a long day. The number — measured in mmHg — simply tells you how firm that squeeze is.
15-20 mmHg: everyday comfort
This is our most popular, all-purpose level. It's a comfortable, gentle hug — firm enough to feel supportive, light enough to wear all day without thinking about it. It's a great starting point if you're:
- On your feet for work or errands
- Traveling on long flights or drives
- Looking for everyday comfort and a little extra support
- New to compression and not sure where to start
Browse our everyday 15-20 mmHg socks.
20-30 mmHg: firmer support
This is a noticeably firmer squeeze, for people who want more support than a standard sock provides. Many folks reach for 20-30 mmHg for long shifts on their feet, athletic recovery, or simply because they prefer a stronger, more structured feel. Explore our 20-30 mmHg socks.
Padded vs. non-padded sole
Both levels come in padded and non-padded options. A padded sole adds cushioning for long hours standing or walking; a non-padded sole gives a sleeker fit inside dress shoes or a snug athletic shoe. It's purely a comfort preference.
How to pick your size
Sizing couldn't be simpler: go by your normal shoe size. No measuring, no guesswork — our size guide shows exactly where you land.
The SmoothToe difference
Whichever level you choose, every SmoothToe sock is made in the USA with a truly seamless toe — so there's no bump rubbing across your toes hour after hour. Just smooth, snug, all-day comfort. Shop all SmoothToe compression socks.
If you're managing a diagnosed circulatory condition, recovering from surgery, or have been advised to wear compression, talk with your healthcare provider about which level is right for you.