What mmHg should compression boots be set to?

Makers don't publish one right answer. Start at the lowest level your boots offer, 20 to 40 mmHg on the models we list, and raise it one step per session until it feels firm but comfortable.

Is higher pressure better in compression boots?

Not on the evidence we have. Cleveland Clinic says some research supports recovery use of inflatable leg devices. The makers' listings don't name a pressure that works best, and a higher maximum mostly gives you range you may never use.

Who should not use compression boots?

Cleveland Clinic says people with deep vein thrombosis should speak with their healthcare provider before starting compression therapy. Read your device's own list of conditions too.

Compression Boot Pressure: What mmHg Settings Mean

Compression boots are sold on numbers: 110 mmHg, 150 mmHg, 200 mmHg. A bigger number looks like a stronger product. It isn’t that simple, and the figure that affects your daily use is one most listings bury.

This article explains what the pressure numbers mean and how five models compare. For rollers, massage guns, and boots together, start with the recovery equipment buying guide.

Short answer: compare the step size, not just the maximum. Boots that adjust in small steps let you find a comfortable setting. Start low, whatever the top of the range is.

What mmHg means

mmHg stands for millimeters of mercury. It is the unit used for blood pressure, and compression boots borrow it to say how hard each air chamber squeezes. The boots inflate chamber by chamber from the foot upward, hold, release, and repeat.

The number on the listing is the pressure inside the chamber at each level. It tells you how firm the squeeze is. It doesn’t tell you how well the boots work.

Five models compared

Boots	Price	Range	Levels	Step size
Therabody JetBoots PRO Plus	$999.99	20–100 mmHg	17	5 mmHg
FIT KING Recovery Power Pro	$449.99	40–150 mmHg	12	about 10 mmHg
Hyperice Normatec 3	$899	40–110 mmHg	7	about 12 mmHg
Therabody JetBoots Prime	$549.99	25–100 mmHg	4	25 mmHg
Hyperice Normatec Go (calf only)	$379	40–200 mmHg	7	about 27 mmHg

Ranges and levels from manufacturer listings, checked September 2026. Where the maker gives only a range and a number of levels, the step size is our arithmetic and assumes even steps.

Why step size matters

Run the numbers on the JetBoots Prime. Its range is 25 to 100 mmHg in steps of 25, so you have four choices: 25, 50, 75, or 100. If 50 feels like too little and 75 feels like too much, you’re stuck.

The PRO Plus covers almost the same range in steps of 5. That is 17 settings. The FIT KING gives 12 settings across a wider range for less than half the PRO Plus price.

The Normatec Go has the highest ceiling here, 200 mmHg, and the coarsest steps. Each level jumps by about 27 mmHg.

Here’s what the spec sheet won’t tell you: most people settle on one or two levels and never touch the rest. Fine steps help you find that level. A high maximum doesn’t.

Lowest setting matters too

The starting point varies as much as the top. The PRO Plus begins at 20 mmHg and the Prime at 25. The Normatec and FIT KING boots begin at 40.

If you’re new to compression, or sensitive to pressure, a low first level makes the first sessions easier. On boots that start at 40 mmHg, your gentlest option is already twice the PRO Plus’s lowest.

What the evidence says about pressure

Cleveland Clinic describes inflatable compression devices as mostly used by athletes and says some research supports their use for recovery. The makers’ listings don’t name a pressure that works best for recovery.

So treat pressure as a comfort setting. Firm and comfortable is the target. Pain, numbness, tingling, or a change in skin color means stop and lower it next time.

How to find your setting

Start at the lowest level.
Run one session on a short timer setting.
Next session, go up one step.
Stop rising when it feels firm but you could still fall asleep in them.
Stay there. More isn’t the goal.

My rule of thumb: if you have to brace against the squeeze, it is too high.

Zones change how it feels

Pressure is only part of the sensation. The number of chambers matters too. The Normatec 3 has 5 zones per leg, the FIT KING has 4, and the Normatec Go has 3 on the calf. More zones make the squeeze travel more smoothly up the leg. The PRO Plus lists 4 overlapping chambers per boot.

Fit matters as well. Boots that are too long or too short put the chambers in the wrong place, and the same mmHg feels different. Check the sizing chart before the pressure chart.

Who should ask a doctor first

Cleveland Clinic says people with deep vein thrombosis should talk to their healthcare provider before starting compression therapy. I’d add anyone with a circulation condition, diabetes with reduced feeling in the feet, a recent leg injury or surgery, or a pregnancy. Read the list of conditions in your device’s manual, which is the maker’s own word on who shouldn’t use it.

To compare compression boots with a massage gun, see our recovery equipment comparison.

Bottom line: the best boots for pressure are the ones with small steps and a low starting point. The maximum is the least useful number on the listing.

Sources

Cleveland Clinic, “Compression Therapy,” updated July 11, 2022: my.clevelandclinic.org
Therabody, Hyperice, and FIT KING listings (pressure range, levels, zones, price), checked September 2026

Not medical advice.This page is general product information. Heat and cold exposure aren't safe for everyone. Talk to a physician before starting a sauna or cold plunge routine, particularly if you are pregnant or have a heart, blood pressure, or circulation condition. See our Editorial Policy.