The Best Breathable Trunks for Hot Weather 2025

Stay-cool underwear options for the hot summer months.

Whether you live in a warm climate, or the summer months are starting to roll around, a high-quality pair of breathable boxer briefs is underwear that you’ll never regret reaching for in the drawer.

Because we’ve all felt it before.

The swampy, pooling of sweat in our seat (commonly known as “swass”) that leaves you damp, sticky, and miserable.

But if you thought this was an unfortunate reality that you were resigned to live with, here’s some good news for you.

Swass is a treatable discomfort.

For reasons unknown, underwear has been an overlooked and underappreciated factor in staying cool.

It certainly shouldn’t be, however, as it’s the first thing you put on and the layer that rests right against your skin.

It makes perfect sense that when you incorporate breathable fabrics and garment features into the design of underwear, it can help to regulate body temperature and wick away moisture.

This in turn helps you stay cooler and drier for longer, whether you’re out in the sweltering heat or simply going about your everyday routine.

Here, we’ve rounded up the best breathable trunk options for hot weather in 2025.

Stock up on your favorites and stay cool this summer.

Here's how we make our picks for Best Breathable Trunks.

Every pair of underwear falls somewhere on the breathability spectrum.

Lots of underwear brands claim their trunk underwear has great breathability but certain options certainly perform better than others.

From extensive testing of men’s underwear options in hot and humid circumstances, we’ve found that two characteristics significantly boost underwear breathability.

1. Extra Lightweight Fabric 

When the temperature rises and your body starts to sweat, there’s nothing worse than damp and heavy fabric sticking to your body.

The weight of the fabric before it gets damp and how it handles sweat will play a big role in overall breathability.

The Tommy John Air Trunks feature incredibly lightweight mesh fabric.

Typically, the best option is going to be a mesh fabric or a naturally breathable material with a permeable construction.

Not only does the permeability of these fabrics allow heat and sweat to move away from your body but it also helps your underwear dry faster. 

2. Strategic Ventilation

The major obstacle in designing breathable underwear is creating a garment that maintains its structural and functional integrity.

In other words, underwear that’s super lightweight and permeable is useless if it doesn’t perform the other necessary features.

The Mack Weldon AIRKNITx Trunks utilize strategic ventilation for improved breathability.

This balance can be achieved through strategically placed ventilation in optimal spots.

Adding ventilation to the spots where it’s needed most will go a long way in keeping you cool while still offering other key aspects like comfort and support.

Note: Featured products are independently selected and reviewed by The Underwear Review. If you purchase through our links, we may earn commission.

1. Tommy John Air Trunks

The Tommy John Air Trunks feature a signature feather-light Air Mesh fabric that’s extra breathable, quick-drying, and weighs in at a mere 2oz.

Shop at Tommy John: Tommy John Air Trunks

Tommy John’s Air Trunks utilize a 4-inch inseam, stay-put waistband, comfortable contour pouch, and a Quick Draw horizontal fly.

These trunks are available in multiple color options.

2. Mack Weldon AIRKNITx Trunks

The Mack Weldon AIRKNITx Trunks feature a breathable performance design that keeps you cool, dry, and comfortable with moisture-wicking capabilities and targeted cool zone construction.

Shop at Mack Weldon: Mack Weldon AIRKNITx Trunks

Mack Weldon’s AIRKNITx Trunks utilize a supportive flyless pouch, a comfortable no-roll waistband, and a stay-put legs design to minimize any fabric bunching.

These trunks are also available in multiple color and pattern options.

3. Gregg Homme Room-Max Air Trunks

The Gregg Homme Room-Max Air Trunks are crafted with a soft high-end micro mesh fabric that’s incredibly soft and breathable.

These trunks have great stretch, a comfortable fit, and a stable one-inch waistband that’s great for everyday wear.

Shop at HisRoom: Gregg Homme Room-Max Air Trunks 

Gregg Homme’s Room-Max Air Trunks have a unique inner front panel construction that provides a gentle lift for improved freedom and slight volume enhancement.

4. LEO Ultra-Light Trunks

The LEO Ultra-Light Trunks feature a signature quick-drying FitTech fabric that’s specially woven to provide exceptional airflow.

These trunks utilize a supportive ergonomic pouch for freedom of movement and the perfect fit.

Shop at LEO: LEO Ultra-Light Trunks

Available on Amazon: LEO Ultra-Light Trunks

LEO’s Ultra-Light Trunks utilize a soft to the touch textured material that’s ultra lightweight and perfectly adjusts to your physique.

These trunks are available in several color options.

5. David Archy Bamboo Breathable Trunks

The David Archy Bamboo Breathable Trunks feature a naturally breathable and moisture-wicking bamboo rayon fabric that keeps you cool, dry, and comfortable.

These trunks add a touch of spandex stretch for unrestricted freedom and a one-piece seamless back for the perfect fit.

Shop at David Archy: David Archy Bamboo Breathable Trunks

David Archy’s Bamboo Breathable Trunks sport a classic contour pouch that’s comfortable and supportive.

These trunks have a stay-put elastic waistband, come in a convenient 4-pack, and are available in several classic color options.

6. Pair of Thieves SuperFit Trunks

The Pair of Thieves SuperFit Trunks feature no-chafe seams and cooling mesh fabric that’s soft and cool-to-the-touch.

These trunks are designed with unique micro ventilation throughout, resulting in superior breathability.

Shop at Pair of Thieves: Pair of Thieves SuperFit Trunks 

Available on Amazon: Pair of Thieves SuperFit Trunks 

Pair of Theives’ SuperFit Trunks utilize a comfortable polyamide and spandex fabric blend that offers comfort and moisture-wicking ability.

These trunks have an extra soft waistband that’s tag-free and stays-put.

7. SAXX DropTemp Cooling Cotton Trunks

The Saxx DropTemp Cooling Cotton Trunks feature incredibly fast moisture-wicking DropTemp Technology to keep you cool, dry, and comfortable.

These trunks have a super soft feel with comfortable 4-way stretch.

Shop at SAXX: SAXX DropTemp Cooling Cotton Trunks 

Available on Amazon: SAXX DropTemp Cooling Cotton Trunks 

SAXX’s DropTemp Cooling Cotton Trunks are designed with non-chafing Flat Out Seams, a patented BallPark Pouch to reduce friction, and a stay-put anti-roll waistband.

8. New Balance Trunks

The New Balance Trunks are a sporty hybrid that feature soft moisture-wicking fabric with 360-degree stretch for activity.

These trunks eliminate any fabric bunching on the legs and forego side seams for a smooth fit under clothing.

Available on Amazon: New Balance Trunks

New Balance’s Trunks have a wide and soft waistband, mesh gusset for breathability, and a fly opening.

These trunks utilize a polyester and spandex fabric blend that comes in a variety of colors and patterns.

If you’re looking to add some great trunks to your rotation, be sure to also check out our list of the Most Comfortable Trunks and the best trunks Available on Amazon.

And for more breathable underwear options, check out these Best Breathable Picks.