Sauna Blankets
How to use a sauna blanket
Eight steps, the clothing question everybody asks, and the maintenance nobody mentions until the blanket starts to smell.
By Scooter M. · Published · Last updated
| # | Product | Rated watts | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 |  HigherDOSE Sauna Blanket Towel Insert A washable 30 x 69 in cotton insert that sits between you and the blanket, which is the single cheapest thing you can do to extend a blanket's life. | Not published | Keeping the blanket clean | 5.8 | Check price |
| 2 |  Lunix LX17 Far Infrared Sauna Blanket The most complete spec sheet in the category and the only published lifetime warranty, though the EMF claim is still a phrase rather than a figure. | Not published | Best documented | 4.0 | Check price |
How to use a sauna blanket, step by step
- Lay the blanket flat on a bed or the floor, over a towel to protect the surface.
- Put a towel insert or a sheet inside it, covering the whole interior.
- Plug it in and preheat for 10 to 20 minutes at your target setting.
- Change into long sleeves and long trousers, or a dedicated insert.
- Put a large glass of water within arm’s reach before you get in.
- Get in, zip or fold the panel across, and set the timer for 30 to 45 minutes.
- Get out, sit up for 10 minutes and let your body temperature settle before showering.
- Wipe the interior dry and leave it open until there is no moisture left.
The preheat is the step most people skip
Manufacturers are unusually candid about warm-up time when you read the fine print. One listing in our roundup states that it takes 5 to 10 minutes to warm and a further 10 to 15 to reach full operating temperature; another quotes 15 to 20 minutes to reach the target. Getting in immediately after switching it on means spending the first third of your session in a lukewarm bag, then concluding the blanket is weak.
It also matters for cost, though less than you would think. Our running-cost page works through the arithmetic. The short version is that a preheat adds a few cents, not a few dollars.
What to wear
Long sleeves and long trousers, in cotton or another natural fiber. Or a purpose-made insert. There are two reasons and both are practical rather than modest.
The first is comfort and safety: every blanket in our roundup has a PU or PVC interior, and heated plastic against bare skin is unpleasant at best. The second is that sweat has to go somewhere. Cloth absorbs it. A bare shell collects it, and you then lie in it for forty minutes.
Session length, and the adaptation curve
Start at 20 minutes at a lower setting. Work up to 30 to 45 minutes over a couple of weeks. One manufacturer publishes an unusually specific version of this: light sweating in the first session, more noticeable by the third, a full sweat by sessions five to seven. We cannot verify that curve, and we are quoting it as a manufacturer’s claim rather than as a fact - but it does match the general shape of heat acclimatization, and it is worth knowing so that a disappointing first session does not end the habit.
The maintenance step nobody mentions
A sauna blanket is a sealed plastic bag that you sweat heavily into three or four times a week. Left folded while damp, it will smell within a month and it will not stop.
Two habits prevent it entirely. Wipe the interior with a damp cloth after each session and leave it fully open until dry - not folded, not in the bag, open. And use a washable insert so that most of the sweat never touches the shell at all. Most blankets ship with disposable thermal wraps, which are not the same thing and are not a hygiene solution.
If you are still choosing a blanket, the full roundup ranks eight of them on what their makers publish, and the safety page covers the 2025 recall you should know about first.
Every pick, in full
Each write-up below shows the score broken into its six components, the specs the listing actually publishes, and the running-cost arithmetic where a wattage exists to compute it from.
#1 - Keeping the blanket clean
HigherDOSE Sauna Blanket Towel Insert
A washable 30 x 69 in cotton insert that sits between you and the blanket, which is the single cheapest thing you can do to extend a blanket's life.
| Small-space fit | 14 / 20 |
|---|---|
| Electrical fit | 20 / 20 |
| Cost to run | 20 / 20 |
| Key-number disclosure | 0 / 15 |
| Spec completeness | 4 / 15 |
| Warranty | 0 / 10 |
| Total | 58 / 100 |
| Rated watts | Not published Not published |
|---|---|
| Maximum temperature | Not published Not published |
| Dimensions | 30 x 69 in Seller’s product title, read 2026-09-07 |
| Weight | Not published Not published |
| Timer | Not published Not published |
| Cooling floor | Not the relevant number for this category |
| Material | Machine-washable towel insert Seller’s product title, read 2026-09-07 |
| Warranty (months) | Not published Not published |
No electrical load. This draws no power of its own. The running cost of a plunge lives in the chiller, or in the bag of ice.
Almost every blanket in this roundup ships with disposable thermal wraps and tells you to wipe the interior with a damp cloth. Neither is a real answer to the fact that you are going to sweat heavily inside a sealed PU shell several times a week.
A washable insert is. It is not exciting and it is not expensive, and it is the difference between a blanket that still smells fine in a year and one that does not. Buy it with the blanket rather than after you have decided you need it.
Buy it if
Anyone buying any sauna blanket, regardless of which one.
Skip it if
Your blanket already came with a fitted washable liner.
#2 - Best documented
Lunix LX17 Far Infrared Sauna Blanket
The most complete spec sheet in the category and the only published lifetime warranty, though the EMF claim is still a phrase rather than a figure.
| Small-space fit | 14 / 20 |
|---|---|
| Electrical fit | 0 / 20 |
| Cost to run | 0 / 20 |
| Key-number disclosure | 5 / 15 |
| Spec completeness | 11 / 15 |
| Warranty | 10 / 10 |
| Total | 40 / 100 |
| Rated watts | Not published Not published |
|---|---|
| Maximum temperature | 77-176 F Seller’s listing, read 2026-09-07 |
| Dimensions | 75 x 37 in folded for use, 75 x 75 in opened flat Seller’s listing, read 2026-09-07 |
| Weight | 21.1 lb Seller’s listing, read 2026-09-07 |
| Timer | Up to 60 minutes Seller’s listing, read 2026-09-07 |
| EMF disclosure | Claim, no figure “Low EMF Far-Infrared Heat, 77-176 F” |
| Material | Five layers: waterproof fabric, cotton, carbon fiber heating, cotton, PU leather Seller’s listing, read 2026-09-07 |
| Warranty (months) | 120 Seller’s listing, read 2026-09-07 |
No running cost can be computed. The listing does not publish a rated wattage, so there is no honest way to tell you what a session costs. We will not estimate one. How we compute running costs
Six of the eight items on our spec checklist are published here, which is the highest count of any blanket we looked at. The dimensions are given twice - folded for use and opened flat - which is genuinely useful, because a blanket you have to lie inside is a different piece of furniture from a blanket you lay out on a bed, and most sellers publish only one of the two numbers.
The warranty is the outlier. A lifetime term, conditional on registering the product, is the longest published commitment in this roundup by a wide margin, and it is the sort of claim a seller does not make lightly on a heating appliance. It is worth reading as a statement about expected failure rate rather than as a promise you will ever need to use.
What is still missing is the number that matters most for cost: rated watts. Nobody in this category publishes it, and Lunix is no exception, so the electrical-fit and cost-to-run components of the score have nothing to work with. The EMF language is the same phrase everyone uses - 'Low EMF' with no measurement, no unit and no distance - which earns partial credit for saying something and no credit for saying anything checkable.
Buy it if
Someone who wants the most published information in the category and values a long warranty term over a brand name.
Skip it if
You want a measured EMF figure. There is no number here, only the phrase.
Questions people actually ask
How do you use a sauna blanket?
Lay it flat on a bed or floor over a towel, preheat it for 10 to 20 minutes at your target setting, get in wearing long sleeves and long trousers or a dedicated towel insert, set the timer for 30 to 45 minutes, keep water within reach, and cool down for 10 minutes before showering. Wipe the interior dry afterwards and leave it open until it is fully dry.
What do you wear in a sauna blanket?
Long sleeves and long trousers in a natural fiber, or a purpose-made towel insert. The interior of every blanket in our roundup is PU or PVC, and bare skin against a heated plastic surface is both uncomfortable and the main way people get a minor burn. Cotton is the usual choice because it absorbs sweat rather than trapping it.
How long should you stay in a sauna blanket?
Thirty to forty-five minutes is the range most manufacturers set their timers around, and it is a reasonable target once you are used to it. Start at 20 minutes at a lower setting for your first few sessions. Several listings note that new users sweat lightly at first and reach a full sweat only after five to seven sessions as the body adapts.
How often should you use a sauna blanket?
Three to four times a week is a typical routine and it is what we use for the running-cost figures on this site. There is no published manufacturer limit beyond session length, but heat exposure is a stress like any other, and more is not automatically better.
How do you clean a sauna blanket?
Wipe the interior with a damp cloth after every session and leave the blanket open until it is completely dry before folding it. Do not machine wash it unless the manufacturer explicitly says you can - most of these have electrical elements laminated into the shell. A washable towel insert is what actually keeps it clean.