After my sympathectomy I ended up with compensatory sweating, which meant I had to rethink what goes under my clothes. Undershirts and underwear became a much bigger part of my setup than I expected. This guide is everything I’ve learned about sweat-proof undershirts and underwear: how they work, which problem each one solves, how to choose, and how the main brands compare.
Quick answer: sweat-proof undershirts and underwear add a barrier layer, usually an absorbent pad backed by a waterproof film, so sweat stays off your outer clothes. They hide sweat marks and protect clothes; they don’t reduce sweating. For underarms, choose a pad undershirt. For groin and bum, choose sweat-proof boxer briefs. For back and chest, a wicking layer plus the right shirt colors usually does more.
Quick answers
Do sweat-proof undershirts work?
For underarm sweat, yes, they generally do: the pad soaks up sweat and a waterproof layer stops it reaching your shirt. They won’t stop you from sweating, and a saturated pad can stay damp against your skin.
What is the difference between sweat proof and sweat resistant?
Sweat proof clothing has a barrier, like a waterproof panel, that blocks sweat. Sweat resistant clothing mostly relies on wicking or absorbent fabric, which helps comfort but won’t fully block heavy sweating.
Are sweat-proof undershirts worth it?
If underarm stains are costing you shirts or confidence, usually yes. If your sweating is mostly on your back or you overheat easily, a lighter wicking layer is often the better buy.
How long do they last?
It depends on how often you wear and wash them. Pads wear out eventually, and brands advise washing them inside out and not sleeping in them. Rotating a few shirts makes them last longer.
How sweat-proof clothing works
| Approach | How it works | Good for | Weak spot | Examples |
|---|---|---|---|---|
| Barrier pad | Absorbent pad under each arm with a waterproof film behind it | Underarm sweat marks | Bulkier; stays damp when saturated; only covers the pad area | Thompson Tee, Ejis, Neat Apparel, Sweatshield |
| Hidden pad shirt | Same pad, built into a tee, polo or dress shirt you can wear alone | Looking normal without an extra layer | Fewer styles; returns can be limited | Social Citizen |
| Layered fabric | Absorbent inner layer plus a hydrophobic outer layer across the garment | Moderate daily sweat | Heavier; slow to dry once wet | SUTRAN |
| Wicking base layer | Moves sweat away from skin so it evaporates | Heat, exercise, back and chest sweat | No barrier; heavy sweat can still show | Moisture-wicking tees and briefs |
| Add-on shield | Disposable or sew-in pads you add to shirts you already own | Budget underarm protection | Fiddly; needs replacing | Kleinerts |
If the wicking-versus-absorbing distinction is new to you, I break it down in moisture-wicking vs moisture-absorbing fabrics.
Match the garment to where you sweat
Underarms
A pad undershirt is the standard fix. See my reviews of Thompson Tee, Ejis and SUTRAN, or the full list of sweat-proof undershirts for men. If you want one layer instead of two, Social Citizen builds the pad into the shirt.
Back and torso
A pad doesn’t cover your back. A thin wicking undershirt and a shirt that doesn’t show moisture will do more. I cover the options in shirts that don’t show sweat, how to hide sweat stains and the best shirt material to avoid sweating.
Groin and bum
This is where sweat-proof boxer briefs come in. My most popular post is the top 10 sweat-proof underwear for men, and my guide for active, sweaty people covers the sporty options. For the causes and other fixes, see groin and bum sweating and how to prevent chafing.
Chest and under the bust
Women’s needs differ, particularly for chest and under-bust sweat. See sweat-proof undergarments for women.
The cheap trick I use
Alongside undershirts, I put panty liners in my shirts and undershirts as an inexpensive extra layer on bad days. I describe my full routine in how I handle hyperhidrosis at work.
Brand comparison
Here is how the main brands compare on the details that matter. Prices are approximate and were researched in 2026, so check each site for current numbers.
| Brand | Type | Approx. price | Ships | Review |
|---|---|---|---|---|
| Thompson Tee | Pad undershirts (men and women) | $33 to $38 | US; international via USPS | Thompson Tee review |
| Social Citizen | Hidden-pad tees, polos, dress shirts | $36 (dress shirt $89) | Worldwide | Social Citizen review |
| Ejis | Undershirts and boxer briefs | $39 to $45 | US-focused | Ejis review |
| SUTRAN | Layered undershirts, boxers, socks | $19 to $54.90 | US store ships in the US only | SUTRAN review |
| Sweatshield | Pad undershirts and boxers | £27 to £35 | UK, Europe and regional stores | Brand roundup |
| Kleinerts | Sew-in shields and tees | $15 to $32 | Many countries | Brand roundup |
| Neat Apparel | Pad undershirts and tees | $36 to $48 | Worldwide | Brand roundup |
| Numi | Women’s undershirts | $65 to $100 | US, Canada, UK, Australia, NZ | Brand roundup |
For delivery times and every brand’s ordering details, see the full 10 best hyperhidrosis clothing brands roundup.
How to choose
- Check pad coverage. Raise your arms in the mirror. The pad should cover the whole sweat area, not just the center of the armpit.
- Pick the fabric for your climate. Cotton and modal feel natural; lyocell and wicking blends dry faster in heat.
- Get the size right first time. Many brands won’t take back opened or worn undergarments, so read the returns policy and size chart before ordering. Ejis offers a first-purchase guarantee; Social Citizen offers size exchanges only.
- Choose the color for what goes over it. A white shirt under a white dress shirt disappears; under a darker shirt a nude tone is better.
- If you sweat heavily, start with Thompson Tee or SUTRAN. In my view these two hide sweat for longer than most of the others. The other brands here are good, but they suit lighter to moderate sweating better.
- Buy two or three. Rotating them lets each one dry fully and last longer.
Care and lifespan
Most brands say to wash inside out with gentle detergent, skip bleach and fabric softener, and avoid sleeping in the garment. Treat the pad as a consumable part: when it stops absorbing or starts to feel thin, replace the shirt.
What they can’t do
Sweat-proof clothing is protection, not treatment. It won’t reduce how much you sweat, and a barrier can trap heat in hot conditions. If sweating is controlling your life, look at actual treatments as well. I compare the evidence in what actually works for excessive sweating, head to feet, and you should talk to a doctor about options that suit you.
This post is based on my own research into each brand’s published specifications and policies, plus my own experience living with hyperhidrosis, plus my own opinion where I say so. Some links in this post are affiliate links: if you buy through them I may earn a small commission at no extra cost to you. That does not change what I write. Prices, products and policies change, so check the brand’s site for current details before you order.
