Across the world of fashion, ladies have it pretty rough. Striking the impossible balance between Madonna and harlot would be challenging enough without an apparel industry that ignores 95 percent of bodies. For swimwear, the stakes are even higher, yet society demands skin-tight suits that are as flattering as they are revealing to rival the steamy, wet looks on the cover of Sports Illustrated at the start of the summer season -- that’s enough pressure to make anyone crazy. 

But you know, else is kind of crazy? That crotch netting in a man’s swim trunks

You don’t have to read one of the many horror stories about *ahem* eggplants getting hopelessly entangled in said netting to have suspicions about this questionable material. That being said, why do swim trunks even have a mesh lining? Is there a reason for the madness?

You have questions, and we have answers. Read on to learn everything you need to know about the mesh lining in swim trunks and what you can do about it. Let’s dive in!


But First, What Are The Different Styles Of Swimsuits, And Do They ALL Have A Mesh Lining? 

From thongs and speedos to trunks and board shorts, there are actually quite a few different styles available for guys on the prowl for a new swimsuit -- but do they all have a mesh lining? 

Actually, yes. Most of them do. And we’ll go over the reasons why here in a moment, but first, let’s take a look at some of the most popular styles of swimsuits on the market today:  

Swim Trunks 

Ah, the classic swim trunk! This beloved swimsuit is the most popular style in the U.S. Cut like traditional shorts, swim trunks are intended to be worn casually (beach, poolside, boat, etc.) and also into the water. These fan favorites often have pockets and a drawstring closure for added convenience. 

We love the swim trunks from Culprit because they’re super comfortable, fast-drying, and the back zipper pocket to carry all your valuables. Plus, that back pocket can fit the folded swimsuit into itself to act as a travel bag. What more could you ask for?

Board Shorts

Board shorts are another popular style that usually comes to or right past the knee. They often have a non-elastic waist and fit closer to the torso. Originally developed for athletes participating in board sports like surfing and paddleboarding, board shorts were designed to have less material that could catch as you mounted your board.

The issue? Less material means less support for Junior. ‘Nuff said. 

Square-Cut Shorts 

When we think of square-cut swim shorts, no less than Daniel Craig as James Bond in Casino Royale comes to mind. Practical and confident are both words that perfectly describe these shorts. This body-hugging swimsuit style is much more popular amongst European men and tends to be more lightweight and revealing than other types of swimsuits. 

Shaped more like your favorite pair of boxer briefs rather than boxer shorts, this super-snug style will cover you from the waist to the upper thigh, providing a lot of freedom and mobility to move, run, swim, or whatever suits your fancy.  


Jammers are knee-length, skin-tight swimsuits used by competitive swimmers and other water sport athletes to reduce drag. These form-fitting compression suits are very similar to cycling bottoms-- but don’t have the padded crotch. 

Wetsuits And Drysuits 

These snug suits are insulated -- designed for prolonged immersion, usually in the context of scuba diving, snorkeling, or board sports like surfing. 

Rashgaurd Bottoms/Surf Shorts 

Rashguard bottoms (a.k.a. surf shorts) are designed for surfers who want to protect their lower half from the sun’s harmful UV rays (thigh sunburn, anyone?). In fact, most rashguard bottoms are made from a UV-reflective fabric with a UPF rating for an extra layer of protection. 

Swim Shirts 

And last on the list are swim shirts, which are an upper-body-only version of a rashguard. These suits are becoming increasingly popular as a sun & surf protection option for casual beachgoers and sunbathers. 

So, Why Exactly Do Swim Trunks Have A Mesh Lining?

Well, believe it or not, there’s actually a handful of reasons. Here are a few of them:

Reason #1: Mesh Linings Provide More Coverage

The mesh lining inside men’s swim trunks is designed to cover your noodle and meatballs. It’s typically made of polyester, and the itty bitty holes in the netting are relatively small. Some swim trunk designs feature a net that’s part of a larger garment lining, while others simply have the net in place. 

Plus, the mesh provides a lightweight barrier to block your wee-wee from direct contact with the fabric of the actual swim trunks. Without the mesh lining, the fabric would cause your sensitive bits to chafe, which, if you ask us, is really uncomfortable. 

Reason #2: Mesh Linings Offer More Support 

Another reason for the mesh lining in your swim trunks is that it provides support for your best boys while taking a dip in the pool. The netting hugs your junk close to the body in a manner similar to your favorite boxer briefs. This keeps them out of harm’s way during physical activity. You see, swimming involves a great deal of movement-- keeping sensitive man bits and pieces up and out of the way allows swimmers to focus on their technique and overall enjoyment rather than on whether or not they’ll injure themselves. 

Reason #3: Mesh Linings Prevent Junior From Poking Out 

Another reason for the mesh underwear apparatus is to keep your suit from clinging to your unmentionables when you get out of the water -- and thus prevent any embarrassment over shrinkage or similar anatomical revelations… 

OK, So What You’re Saying Is We Need Mesh Lining? 

Seeing as the mesh lining in swim trunks provides more coverage, offers more support, and can save us from embarrassment -- yes, you need the mesh lining. But thankfully, you have options. 

Meet Culprit Underwear: Creator Of The Removable Liner 

If you haven’t heard of Culprit Underwear, then you’re missing out. Culprit is the leader in luxurious undies -- sustainable, and ethically made. Designed to breathe and contour to your body, resulting in unmatched support, comfort, and style, Culprit is your lucky pair engineered for everyday use. While we can sit here all day and rave about these buttery-soft, moisture-wicking skivvies, we want to turn the spotlight over to Culprit’s Swim Trunks

Swim trunks are great because the mesh lining offers support, but sometimes it gets itchy when wet, chafing, and sand can really make things extra uncomfortable. Board shorts, on the other hand, are great but offer little to no support -- plus, you might accidentally flash your grandma (or worse, someone else’s grandma). 

So, what’s a guy to do? 

That’s where Culprit steps in. They invented a fully removable liner (we know, *mind blown*). 

All it takes is 6-8 snaps, and just like that, your liner is out, allowing your trunks to dry faster and kicking that annoying post-swim itch to the curb. Plus, they just turn into shorts which is pretty cool if you ask us (or anyone, really). 

A Final Word 

So, why do swim trunks have a mesh lining, you ask?

Swim trunks have a mesh lining because the liner provides more coverage, offers more support, and can save you from embarrassment when your suit sticks to your body as you get out of the pool. 

Okay, so the mesh liner has its benefits --but wouldn’t it be great if it was removable? 

Your wish is our command. 

Here at Culprit, we understand how frustrating that mesh liner can be -- that’s why we’ve created all of our swim trunks with a removable liner. All it takes is 6-8 snaps (depending on size), and just like that, your liner is out!

Whether you’re looking for the best butt-huggers on the planet or the comfiest swim trunks around, Culprits’ got your back. 



Ultraviolet (UV) Radiation |

Casino Royale (2006) | IMDB

Acute Foreskin Strangulation Injury due to Bathing Suit Mesh Entrapment | NCBI