Moisture Wicking Underwear for Men: The Best Options for Sweat-Free Comfort

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If you’re a guy who sweats (and let’s be real—that’s most men), the wrong underwear can make any day uncomfortable fast. Sweat leads to chafing, odor, heat buildup, and that sticky feeling nobody wants during workouts, workdays, or warm weather. The good news? A good pair of moisture-wicking underwear can completely change your comfort level.

Today, I'm breaking down the best moisture wicking underwear for men, using real-world comfort criteria, fabric performance, and breathability. I also compare three standout pairs: the Woolly Clothing Co. Everyday Boxer Brief, the Smartwool Men’s Merino Boxer Brief, and the Tommy John Air Trunk.

Whether you deal with all-day groin sweat, intense workout moisture, or hot-weather humidity, this guide will help you choose the right pair that keeps you cool, dry, and comfortable.

❓ If you feel like you sweat an abnormal amount, take a look at my post explaining why some people sweat more than others.

Most men run hotter than women due to muscle composition and hormonal differences. Add in activity, stress, or hot climates, and sweating becomes unavoidable. But for men, sweat in the groin area comes with extra challenges:

• Chafing from damp fabric rubbing full-motion
• Odor caused by bacteria thriving in warm, wet areas
• Heat buildup that feels uncomfortable (you know exactly what I mean)
• Moisture retention that leads to sticking, discomfort, and skin irritation

   

Good moisture-wicking underwear solves all of this with:

• Breathable fabrics
• Rapid sweat evaporation
• Temperature control
• Antimicrobial fibers
• Designs that reduce friction

   

This is why more men are searching for men’s underwear that keeps you dry—and why choosing the right fabric and fit matters.

⚠️ Staying dry is more important than just being comfortable, as moisture can also lead to fungal infections.

Not all underwear labeled “moisture wicking” actually keeps you dry. The technical side matters, so here’s what to look for.

Materials like polyester, nylon, and spandex blends pull sweat away quickly and dry fast.

Pros:

• Very fast drying
  
• Lightweight
  
• Affordable
  
• Durable

Cons:

• Can retain odor
  
• Not as soft or temperature-regulating as natural fibers

This is the gold standard for breathability and odor control.

Pros:

• Naturally moisture-wicking
  
• Controls odor better than any synthetic
• Regulates heat (keeps you cool or warm)
• Soft and comfortable

   

Cons:

• Pricier
• Requires gentle care

• Mesh zones for airflow
• Flatlock seams to prevent chafing
• Gussets and stretch panels for movement
• Breathable waistbands to avoid trapped heat

Moisture-wicking underwear works because it moves sweat from the skin to the fabric’s surface, where it can evaporate. This keeps you drier, cooler, and more comfortable—especially if you're active or live somewhere warm.

✅ These fabrics and materials also matter for other clothing such as breathable shoes and moisture-wicking socks.

I compared multiple types of performance underwear options to find the best combinations of breathability, moisture control, comfort, and value. These three stood out above the rest—each for different reasons.

Below, you’ll find in-depth breakdowns of the top contenders.

Woolly Everyday Boxer Brief as seen on the Woolly website.

Best for: All-day wear, hot climates, and men who want long-lasting comfort Fabric: 67% Merino Wool, 33% Nylon The Woolly Everyday Boxer Brief is a go-to choice for guys who sweat but don’t want to feel like they’re wearing athletic gear all day. The fabric is soft, temperature-regulating, and naturally resistant to odor. What makes these stand out is how well they balance breathability and everyday comfort. They wick remarkably well thanks to merino’s hollow-core fibers, which move moisture outward while keeping the skin dry.

What Men Will Love

• Soft next-to-skin feel
• Great airflow and temperature control
• Superb odor resistance (merino is king here)
• Flexible fit that moves with you
• Works equally well for workdays and workouts 

Best For

If you want the best moisture wicking underwear for men that works in nearly any situation—commuting, working, lifting, hiking, or traveling—Woolly is the versatile winner.

Smartwool Merino Boxer Brief as seen on the Smartwool website.

Best for: Performance athletes, running, and odor control
Fabric: 88% Merino Wool, 12% Recycled Nylon

Smartwool creates some of the most performance-focused merino gear on the market—and their men’s boxer brief is no exception. These are ideal for guys who sweat heavily during workouts or long days outdoors.

The rib-knit structure boosts breathability while the lightweight merino helps regulate temperature. Out of the three, Smartwool offers the strongest odor control and consistently stays dry during movement.

What Men Will Love

• Exceptional odor resistance
• High breathability and airflow
• Anti-chafing seams
• Fantastic moisture transport for high-sweat activities

   

Best For

If you want moisture-wicking underwear specifically for running, working out, or high-intensity sweat, Smartwool is hard to beat. These truly shine when you’re moving and sweating continuously.

Tommy John Air Trunk as seen on the Tommy John website.

Best for: Maximum ventilation, fast drying, and guys who prefer synthetics
Fabric: 75% Polyamide, 25% Elastane

The Tommy John Air Trunk is the most breathable pair on this list, and the fastest-drying. Made from ultra-light mesh synthetic fabric, these feel cooler than traditional boxer briefs and are engineered for airflow.

If you want underwear that delivers the coolest feel, the Air Trunk is your pick.

What Men Will Love

• Feather-light feel
• The fastest drying time of any pair here
• Stretchy, supportive fit
• Breathable mesh that keeps air circulating

   

Best For

If you want sweat proof underwear for men that stays cool in hot weather—or during intense workouts—this is the best synthetic option.

Choosing the right pair depends on your climate, activity level, and personal preferences. Here’s what to consider.

• Light to moderate sweating: Woolly
  
• Moderate to heavy sweating: Smartwool
  
• Heavy sweating or high ventilation needs: Tommy John

   

If your main goal is everyday comfort, choose merino.
If your main goal is peak cooling, choose synthetic.

Hot & Humid Climates

Synthetic mesh (Tommy John) performs best because it dries the fastest and doesn’t hold heat.

Variable or 4-Season Climates

Merino shines because it adapts to temperature changes and prevents odor.

Extreme Heat + Outdoor Work

Look for ultra-breathable mesh options—the airflow makes the biggest impact.

Boxer Brief

Best all-around choice for sweat control and comfort.

Trunk

Great for mobility and guys who want a shorter leg (Tommy John Air).

Brief

Breathable but less ideal for high-friction workouts.

If odor is your top concern, merino wool is far better than synthetics, no matter what marketing says. Merino’s natural antibacterial properties minimize odor even after hours (or days) of wear.

👉 See this post for more detail on how sweat triggers odor.

Here’s the simple breakdown:

Best Overall Everyday Comfort → Woolly Everyday Boxer Brief

Balanced, comfortable, odor-resistant, and breathable. Great for any situation.

Best for Workouts & Heavy Sweating → Smartwool Merino Boxer Brief

Merino’s performance shines under pressure. Ideal for runners, hikers, and athletes.

Best for Maximum Ventilation & Fastest Drying → Tommy John Air Trunk

Ultra-light, fast-drying, and perfect for hot weather or intense workouts.

If you want underwear that keeps you dry, reduces odor, and actually feels comfortable from morning to night, any of these three will get the job done—but the right pair depends on your sweat level and lifestyle.

👉 I also have a helpful review of the best undershirts for people who sweat alot.