Perforated Underwear Benefits: What the Holes Really Do

by Carter Vale October 29, 2026

Perforated underwear uses small laser-cut or punched openings in the fabric to let air move and moisture escape. The plausible benefits are better airflow, less trapped sweat and a lighter feel in heat. The honest caveat is that almost no research tests perforated underwear itself. The evidence comes from nearby textiles such as sportswear and medical liners, and it says the holes help only when the fabric, the hole layout and the fit work together.

Below, we separate what is well supported from what is marketing, cover the trade-offs men run into, and explain how to choose a pair you will still like in month six.

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TL;DR

Perforations can raise airflow and vapor transport, which may mean less trapped sweat and a cooler feel. Results depend on the fabric and the hole design, not on holes alone.
The direct evidence is thin. Most studies cover sportswear, shirts or prosthetic liners, so treat the benefits as likely rather than proven for underwear.
Drawbacks are real: weaker fabric around the holes, possible edge friction, less coverage and visibility under light pants.
Fit, seam placement, stretch and leg design often decide comfort more than ventilation does.
Wash gently and air-dry to keep stretch and moisture performance.

What counts as perforated underwear
The benefits perforations can offer
What the evidence does and does not show
The drawbacks to weigh
Who is most likely to benefit
Our perspective
How to choose a pair that actually works
Caring for perforated and stretch underwear
Try a boxer brief built around fit
FAQ
Sources

What counts as perforated underwear

The term gets used loosely, so it helps to be exact. Perforated underwear has many small openings across a panel, often the front, sides or back, cut into an otherwise solid knit. That differs from three things people confuse it with:

A fly. This is a single functional opening at the front for bathroom access. It is about convenience, not airflow.
A mesh panel. Here a different, open-structure material replaces part of the garment. It is knitted open instead of cut open.
A lining or pouch layer. An extra layer of fabric inside, added for support or opacity, which can actually reduce airflow.

The difference matters because each one behaves differently on the body. A perforated panel keeps the stretch and recovery of the base fabric but removes some material. A mesh panel has its own stretch properties, and where it meets the main fabric, the two can pull differently. Utah State University Extension notes that fabric construction and treatments, including mesh panels, affect wicking performance, so the presence of openings alone does not tell you how a garment performs.

The benefits perforations can offer

More airflow

The most intuitive benefit is air permeability: how easily air passes through a fabric. ASTM’s standard test for it describes air permeability as an important factor in clothing performance and a way to gauge breathability. The same standard explains that yarn construction, weave, finishing and surface texture can change the result. Two garments with the same number of holes can therefore breathe quite differently if one uses a denser knit or a heavier finish.

In practice, a perforated panel makes the biggest difference in a snug garment worn in heat, where a solid knit pressed against skin leaves little room for air exchange.

Faster moisture release

Sweat is the real enemy of all-day comfort. When moisture sits between skin and fabric, it raises friction and softens skin. A 2021 textile study explains that repetitive friction combined with pressure, shear, temperature and moisture can lead to discomfort, blisters and pressure-related skin injury, and that next-to-skin construction shapes the skin microclimate.

The closest direct evidence for perforations comes from an unexpected place. A peer-reviewed study of perforated liners for prosthetic users found perforations moved moisture away from the skin, and users reported 61.8% lower perceived sweat than users of nonperforated liners. That is promising, but it concerns a different product worn in a different way. It does not prove the same result for underwear.

A fresh materials paper adds a second data point. ACS Omega reported in October 2026 that engineered open channels raised water-vapor permeability in tested multilayer systems by up to 3.5 times for synthetic leather and up to 1.5 times for natural leather. These are not textiles worn as underwear, but the physics of channels moving vapor is the same idea.

Faster moisture release — overview diagram

A cooler feel in heat and exercise

Cooling is where fabric choice shows up in measured body data. In a study of 10 healthy men exercising in heat, a polyester and elastane shirt produced significantly lower rectal temperature in the final 15 minutes and held less sweat than a cotton shirt. Note what that tells you: the advantage came from the moisture-wicking fiber, not from holes.

Another study of sportswear found that evaporative cooling efficiency fell as moisture moved from skin into clothing, and that thicker fabrics cooled less well than thin ones. If perforations make a garment thinner or help moisture leave rather than pool, that logic suggests a benefit. It is an inference, though, not a finding about underwear.

A cooler feel in heat and exercise — overview diagram

Lighter weight and flexibility

Removing fabric can make a garment feel lighter. Utah State University Extension describes wicking fabrics as breathable, lightweight and stretchy, moving sweat away from skin so it can evaporate. Its guide also says polyester is lightweight, breathable, durable and non-absorbent, while spandex supplies the stretch and range of motion. Perforations on top of that kind of fabric can add to the airy feel, but the base blend does most of the work.

Possible relief for people who run hot or irritate easily

Dermatology authors from the University of Arizona and UCLA wrote that breathable, absorbent undergarments can reduce sweat retention, odor, friction and irritation for people managing hidradenitis suppurativa. That is expert guidance for a specific skin condition, not a trial of perforated underwear. If you have a skin condition, a dermatologist is the right person to ask about fabric, not a product page.

What the evidence does and does not show

It is worth putting the research in one place, because the gap between “plausible” and “proven” is the heart of this topic.

Claim	What supports it	How direct it is
Perforations move moisture away from skin	Perforated prosthetic liner study, 61.8% lower perceived sweat	Indirect: different product
Open channels raise vapor transport	ACS Omega 2026 multilayer materials study	Indirect: materials lab, not clothing
Wicking synthetics keep you cooler than cotton	Heat-exercise study of 10 men	Direct for shirts, not holes
Thinner fabric cools better	Sportswear evaporative-cooling study	Direct for fabrics, not underwear
Perforated underwear reduces chafing	No study found	Unsupported

The last row matters. Claims that perforated underwear reduces chafing or odor are common in product copy, but we found no study that tests them on underwear. If a brand says otherwise, ask where the data is.

There is also a useful reality check from a study of eight men exercising under hockey gear. Synthetic undergarments held less water than cotton (140 versus 310 grams), yet thermal and performance outcomes were largely similar, because the protective layers over the top dominated. Underwear is one layer in a system. Under heavy outer layers, its ventilation matters less than you would hope.

The drawbacks to weigh

Less material means less strength

The same ACS Omega work that found better vapor transport also warned that added perforation can reduce mechanical performance: you trade some load-bearing area and durability for airflow. That makes hole size, spacing and reinforcement important. A pair with large holes near a stress point, such as the leg opening or the seat, may stretch out or tear sooner than a solid knit.

Edge friction and irritation

Cut edges that are not sealed can feel rougher against skin. On a clean laser-cut synthetic, edges are usually fused and smooth, but quality varies. If you already deal with seam irritation, our guide on clinician-backed fixes for underwear seam irritation is a good place to see what actually causes rubbing.

Coverage and visibility

Holes show. Under light-colored or thin trousers, perforations can create a visible pattern. Perforated panels can also offer less coverage than solid ones, which matters if you want a smooth look or more modesty in a gym locker room.

Breathability depends on the whole garment

A perforated panel in a thick or hydrophobic fabric can still feel hot. One exercise study found that fabric hydrophilicity affected heat strain and the clothing microclimate in warm, windy conditions, so fiber moisture behavior matters on top of ventilation. And cotton, comfortable for lighter workouts, absorbs moisture and dries slowly, leaving wet fabric next to your body, which holes will not fix.

Who is most likely to benefit

Perforated underwear makes the most sense in a few situations:

Hot climates or summer. Hours of heat and humidity are where extra airflow is most noticeable.
Running, cycling and gym sessions. Sweat output is high, and a thin, stretchy, wicking fabric is already the right choice.
Men who run warm. If you finish a normal day feeling damp, ventilation may be worth testing.
Under loose shorts or athletic pants. Visibility is less of an issue, and airflow has a path to move.

It matters less if you work in a cold office, wear heavy layers, or mostly want a smooth, invisible line under dress pants. In those cases, fit and fabric carry more weight than holes. Our comparison of ventilated and solid fabric underwear walks through that decision in more detail, and the piece on breathable versus wicking underwear in five everyday scenarios helps if sweat is your main concern.

Our perspective

We make boxer briefs, so we have a stake here, and we would rather say it plainly: the biggest comfort complaints we hear are not about airflow. They are about a leg that rides up, a waistband that rolls, a tag that scratches and a fabric that goes baggy after a few washes. A pair with holes does not solve any of those.

That is why we build around the garment as a whole. The Contour™ Signature Boxer Brief has a non-rising leg that stays put through the day, a tagless finish, four-way stretch and a breathable, lightweight fabric designed to hold its fit wash after wash. It is not a perforated design, and we do not claim it is. Our view is that a well-cut, stretchy, breathable knit that stays where you put it will beat a perforated pair that bunches and needs constant adjusting.

If you want to dig into the leg and fit side, see why underwear rides up and the fixes that start with fit. If you are weighing fabrics, our guide to checking fiber, elastane and fit covers what to read on a label.

— Tim

How to choose a pair that actually works

Use these checks, in this order, whether or not you buy perforated.

Start with the fabric. A lightweight, stretchy, moisture-wicking knit does more than holes in a heavy one. Compare options such as nylon and polyester underwear or modal and cotton based on how much you sweat and how fast you want it to dry.
Look at the hole layout. Small, evenly spaced openings with fused edges tend to hold up better than large cutouts. Avoid holes at stress points like the leg band.
Check the seams and tags. Flat seams and a tagless finish matter as much as ventilation. Here is how tagless underwear reduces irritation.
Test the fit. Pouch depth, seam placement, stretch, rise and leg length all interact. Try one pair first and wear it for a full day before buying a drawer’s worth.
Match the length to your activity. Under compression shorts or athletic gear, see how to choose by sport, skin and sweat. If you are unsure about cut, the guide to boxers versus boxer briefs helps.
Ask what is claimed and what is measured. Phrases like “up to 90% more airflow” mean little without a test method. Standards such as ASTM D737 exist for air permeability; a brand that cites one is giving you something checkable.

Caring for perforated and stretch underwear

Most performance underwear is a blend containing elastane, and heat is what damages it. Erlich Textil advises that elastane garments should not be washed hotter than 40°C (104°F), should go on a delicate cycle and should dry flat. Those same habits protect any perforated panel, since stretched, weakened fabric around the holes is where wear shows first.

A few simple rules:

Wash in cool or lukewarm water on a gentle cycle.
Skip fabric softener, which can coat fibers and slow moisture movement.
Use a mesh laundry bag so the holes do not snag on zippers or hooks.
Air-dry or tumble on very low heat.
Replace pairs when the leg band loses its recovery or the holes start to enlarge.

Try a boxer brief built around fit

If the real problem is a leg that creeps up and a fabric that feels stiff by afternoon, start there. The Contour™ Signature Boxer Brief is $19.99 and combines a non-rising leg, a tagless finish and four-way stretch in a breathable, lightweight fabric. It is made to keep its fit and softness through repeated washing, and free worldwide shipping options are available.

Wear a pair through one full day, workout included, and you will know quickly whether it solves what you were hoping holes would.

FAQ

Does perforated underwear really keep you cooler?

It can, mostly by letting more air and vapor pass through a thin, stretchy fabric. The evidence is indirect: studies on sportswear and perforated liners support the idea, but none tests perforated underwear itself. The fiber and thickness of the fabric still do much of the work.

Is perforated underwear better than mesh underwear?

Not automatically. Mesh is a separate open-structure material, while perforations are cut into the base fabric, and each can breathe well or poorly depending on construction. What matters is how the panel is built and how it stretches and recovers alongside the rest of the garment.

Does perforated underwear reduce chafing?

We found no study that shows this. Chafing comes from friction, pressure, heat and moisture, so anything that lowers moisture could help, but rough cut edges or a poor fit can make it worse. Fit, flat seams and a tagless finish usually matter more.

Does perforated underwear wear out faster?

It can. Research on perforated materials warns that openings reduce load-bearing area and durability, so reinforcement and hole placement matter. Washing gently and air-drying helps any stretch garment last longer.

Is perforated underwear a good choice for everyday wear?

It can be in warm weather or if you sweat a lot, but it is not essential. For most days a well-fitting, breathable, tagless boxer brief with good stretch will feel better than a pair chosen for holes alone. If you have a skin condition, ask a dermatologist about fabric.