If you’re in search of sweat proof underwear, or just curious about what they are, you’ve come to the right place.
What Are Sweat Proof Underwear?
First, let’s define what sweat proof is and is not.
What Sweat Proof Is NOT
Sweat proof does NOT mean sweat repelling. That is generally called hydrophobic or super-hydrophobic (water hating).
If you wore 100% sweat repelling or hydrophobic underwear, the fabric against your skin would not absorb moisture at all, so it would stay between your skin and the fabric.
If that were to occur, then sweat would likely get trapped on your skin’s surface, and possibly drip all throughout the inside of your underwear.
I don’t know about you, but I would not want to have puddles of sweat dripping all through the inside of my underwear.
Also, it is NOT the the same as moisture wicking underwear. Many brands are conflating (mixing together) the terms sweat proof and moisture wicking, which is not only confusing, it is 100% misleading.
Below I provide more details about the difference.
Be sure to check out my Top 9 Sweat Management Solutions article. It contains information about sweat blocking undershirts, sweat proof underwear, various antiperspirant & sweat-reducing options, and much more.
What Does Sweat Proof Mean? What Is Sweat Proof?
When people are in search of men’s or women’s sweat proof underwear, they are generally looking for underwear that will prevent sweat marks from getting on their clothes.
Meaning, they don’t want the sweat from their body penetrating all the way through the fabric, where it will come in contact with their pants (shorts, slacks, jeans, etc.) and leaving visible sweat stains.
So, more simply put, people are looking for underwear that will absorb sweat off their body, but also prevent it from soaking all the way through.
Frequently Asked Questions
Before we go any further, let’s cover some of the most frequently asked questions about sweat proof underwear.
What is sweat proof underwear?
In simplest terms, sweat proof underwear is underwear that prevents sweat from reaching your pants, preventing wet sweat marks.
Is sweat proof underwear the same as moisture wicking underwear?
No. Sweat proof underwear prevents sweat from soaking through to your pants. Moisture wicking underwear does not absorb sweat, it transfers it. So you’re more likely to get sweat stains on your pants if you’re wearing moisture wicking underwear.
Does sweat proof underwear repel sweat?
No. Sweat proof underwear absorbs sweat, instead of repelling it. The fabric will absorb the sweat, spread it across the surface of the fabric, and prevent it from soaking through to the outer side.
What is the best underwear for sweating?
It depends on whether you’re trying to stay dry or prevent sweat from reaching your pants. Moisture wicking underwear will absorb very little sweat, and as a result, can help you feel and stay more dry. Sweat proof underwear absorbs sweat.
Best Underwear For Sweating
The medical term for excessive sweating is hyperhidrosis (mayoclinic.org).
Most people with hyperhidrosis have excessive sweating in the underarm area. Others have it on the hands, feet, and face. A smaller percentage have heavy sweating on the chest, back, butt, and other nether regions.
For those with excessive sweating in the underarm region, they seek out hyperhidrosis undershirts. Or rather, undershirts with sweat-proof underarm barriers. They are also known as sweat proof undershirts.
As such, if you’re in search of underwear that will prevent sweat-through, you could also try searching for hyperhidrosis underwear instead of sweat proof underwear. Keep in mind, you don’t have to have clinical hyperhidrosis to want to wear this kind of sweat blocking underwear.
Sometimes, it just fucking hot out, you’re sweating your ass off (literally), and you just don’t want end up with soggy, visibly sweat-stained pants.
Sweat Marks – They’re Freaking Embarrassing
Let’s just put it out there.
The main reason we don’t want pit stains or visible swamp ass is because it’s just plain embarrassing – at least for most of us.
Granted, there are parts of the world where it’s so hot, that everyone sweats no matter what they do. As such, and in those areas, people are not as concerned about visible sweat stains.
But for the rest, avoiding visible sweat marks anywhere on outer clothes is of critical importance.
Guide To Buying Sweat Proof Underwear
1. Avoid Moisture Wicking Underwear
While it may sound strange, moisture wicking fabrics are not the same as those that prevent sweat-through. In fact, it’s quite the opposite.
I have a very extensive article that covers the moisture wicking topic pretty thoroughly. In short, wicking fabrics allow sweat to pass through the fabric more quickly. As a result, it has a tendency to get outer clothes wetter, faster.
Moisture wicking underwear is good for travel, the gym, or any other activity where it’s important for the fabric to dry fast. But, if you’re trying to prevent getting sweat stains on your pants, it’s best to avoid any underwear made from moisture wicking fabrics like polyester.
2. Buy Moisture Absorbing Underwear
While cotton is one of the most commonly used fabrics in underwear and undershirts, there are other newer fabrics that absorb more moisture and dry faster.
Cellulose based fibers like viscose, rayon, Modal, MicroModal, & TENCEL all have cell structures designed to be more absorbent, and have better moisture management capabilities than natural fibers like cotton.
As such, you may find that underwear made from those types of materials will absorb more sweat than its cotton equivalent, which means it’s less likely that sweat-through will occur.
Additionally, there are synthetic materials like polyamide (Nylon) that have similar characteristics to cellulose based fibers. They will absorb more moisture, and dry faster than cotton, generally speaking.
Your sweat proof underwear need could be solved simply by changing underwear fabrics.
3. Consider Weight & Weave
Thinner fabrics can’t absorb as much moisture as thicker fabrics.
So, if you’re currently wearing thinner cotton underwear, trying buying underwear made from thicker cotton.
Or even better, buy thicker underwear made from the moisture absorbing fabrics noted above.
Weave also plays a role in moisture management (absorption, distribution, & drying). As such, underwear with unique knit patterns (diamond, cellular, mesh, tricot, etc.) could be worth trying.
4. Use Antiperspirant Wipes or Hack Your Wardrobe
Instead of buying more absorbent or sweat proof underwear, consider using antiperspirant wipes instead.
If your high sweat situation is only occassional or seasonal, you may not need to purchase underwear that prevents sweat-though.
Try combining moisture absorbing underwear (above) with a 7-day antiperspirant wipe like Klienerts Sweat Shield, SweatBlock, or other similar hyperhidrosis antiperspirants.
In the summer, I tend to get a little sweaty on the back of my legs. So, I just use an antiperspirant wipe in that area, and I stay sweat free for 7-10 days.
You could also try hacking the back of your underwear by adding a layer of adhesive sweat pads (Amazon).
Or, add a layer of absorbing fabric to the back of your underwear or pants. Check the comments section of this article for more information about that.
5. Try Sweat Proof Underwear
If your sweating condition is more severe, you may need to purchase sweat proof underwear.
Here is a list of companies producing underwear with sweat blocking characteristics.
Men’s Sweat Proof Boxer Briefs. Ultra-thin water proof layer in the places you need it most.
More Info: Website
Sweat Resistant Underwear for Men & Sweat Resistant Panties for Women. Fabric protected with Fabrapel, a water-resistent fabric treatment.
Items also have water-proof protection in the crotch area.
Sweat Proof Boxer Brief for Men. Created With Drilook technology to prevent moisture and perspiration stains.
Underwear constructed with two layers of fabric which creates an air chamber that allows sweat to evaporate completely before it is visible.
Sweatshield Boxer Briefs
Men’s Sweat Proof Boxer Briefs. A sweat barrier is built into the backside of the underwear.
More info: Website
After ETS Surgery: Underwear & Shorts Dripping With Sweat
Here’s a question from someone who has already tried Eji’s & Sutran’s sweat proof underwear:
I have awful compensatory sweating from ETS surgery, however the surgery definitely corrected my hands sweating.
In the summer my shorts are literally dripping with sweat after a 4-hr round of golf in Georgia.
Is there any underwear that will protect my outer shirt and pants from soak through sweating during the summer.
I’ve tried both Sutran and Ejis sweat proof boxer briefs in 95 degree Georgia heat while playing golf. Neither was very effective.
Regarding Ejis & Sutran: My Reply
Good to hear back from you!
I’d like to update my article with your experiences with both products, so we can help others with the same issue.
I’m a bit surprised to hear the Ejis sweat proof underwear didn’t work — as they are supposed to have a sweat-blocking membrane between the two layers of fabric on the back side of their underwear.
Can you tell me more about your experience with the Ejis boxer briefs? Where did the sweat penetrate through? Did you contact them about it? If so, how did they respond?
They mention their underwear is 100% guaranteed to stop sweat marks on your butt, back of legs, and groin. So, if they did not work for you, I’d like to hear more about where they fell short for you.
I don’t think Sutran has a membrane, so i’m not that surprised they didn’t work, but it’s unfortunate. Can you tell me about your experience with Sutran underwear?
Alternative Idea: Combine 7-Day Antiperspirant Wipes
Have you tried combining a 7-day antiperspirant wipe like Sweatblock or Klienerts Sweat shield with Ejis or Sutran underwear?
Meaning, apply the antiperspirant wipes on the back of your legs and butt, let it take effect overnight, then wear the sweat-proof underwear.
Sweat Shield (Amazon)
The more detail the better (:
Look forward to hearing back from you!
Extreme Compensatory Sweating
A reply from Tommy:
My compensatory sweating is so bad in our extreme heat…I could literally squeeze sweat from my outer shorts!
At these extreme temps I don’t think it’s a fair test.
I will say at church this morning the Sutran shirt and Sutran boxers did great.
Sunday afternoon playing golf at a heat index of 103 — the boxer briefs could not cut it. I sweat right through them.
Again the Sutran t-shirt did well.Tommy
If you have other ideas, or want to share your thoughts about this topic, please comment below.