What Do Cosplayers Really Wear Under Their Costumes at Conventions?

"The first time I went to a convention, watching cosplayers in their stunning outfits, one question kept running through my mind: how do they use the bathroom?"

An open secret in the cosplay community: beneath those magnificent costumes lies a hidden survival strategy

This is a highly upvoted question on Zhihu, and a curiosity shared by countless convention-goers. When you see someone dressed as Elsa from Frozen in a flowing gown, a heavily armored Genshin Impact character, or Asuka from Evangelion in a sleek latex suit gliding gracefully through the exhibition hall, you might wonder: how long does it take to put that on? Can it be taken off once it's on? What happens if they suddenly need to go to the bathroom?

Today, we're diving deep into the cosplay community to uncover this "open secret."

1. The Ultimate Cosplayer's Dilemma: Once It's On, It's On

Let's start with some data: an experienced cosplayer takes 1 to 2 hours to put on a latex bodysuit, working from the feet upward. For beginners, it takes even longer.

What does this mean? It means that once the costume is on for the day, it's essentially "welded" to their body.

Conventions typically last 6-8 hours. Add travel time, and cosplayers often wear their costumes for over 10 hours. During this time, eating, drinking, walking, posing for photos—everything must be done while fully suited up. And the most daunting challenge of all is—using the restroom.

A veteran cosplayer shared her experience on Xiaohongshu: "Once, I wore heavy armor to a convention. From the moment I put it on until I got home, it was 12 hours. I didn't dare drink anything the whole time. It's not that I didn't want to use the restroom; it's that I literally couldn't take the costume off. Even if I could, there was nowhere to put it back on."

This is the reality cosplayers face: behind every stunning costume lies a struggle that most people can't imagine.

2. An Open Secret: How Cosplayers Solve the Problem

Within the community, a set of "survival tactics" has long been established.

Approach 1: The Latex Cosplayer's Base Layer Strategy

Latex costumes (made of PVC, latex, or similar materials) are among the most challenging in cosplay. Because of the material's properties, once a latex suit is on, it's extremely difficult to remove. Moreover, many latex cosplayers face the awkward reality of having to go "commando" to achieve the character's look.

So what do experienced cosplayers do?

According to community knowledge, many latex cosplayers wear body stockings or sports tops as a base layer. These undergarments not only solve the "commando" issue but also reduce friction between the latex and the skin. When it comes to the ultimate question of "bathroom breaks," there's an unspoken consensus: once the costume is on, you don't use the restroom.

Approach 2: Lightweight Cosplayer Gear

For cosplayers portraying simpler characters (such as JK uniforms or everyday outfits), the approach is more flexible: easy-to-remove undergarments.

Convention outfit guides often emphasize a simple principle: "stunning on the outside, comfortable on the inside." Specifically, cosplayers opt for:

Wire-free but supportive bras made of organic cotton blends or modal fabric, soft and breathable

Seamless designs to avoid visible lines under tight costumes

Bras with adjustable transparent straps for backless outfits

Sports bras for better support

One cosplayer wrote in a post: "Choosing the right underwear is more important than choosing the right costume. Wear the wrong thing, and three hours later, your straps are slipping, your back is sweating, and the whole convention is ruined."

Approach 3: The "Ultimate Choice" for Heavy-Armor Cosplayers

For those in heavy armor, large ball gowns, latex suits, or other "hard-to-remove" costumes, there is a more private solution within the community—adult pull-up pants.

This topic is highly sensitive and rarely discussed openly. Yet in anonymous forums and private conversations, it's an open secret.

An anonymous cosplayer wrote on a forum: "When I'm wearing heavy armor to a convention, I basically always wear adult pull-ups. It's not shameful—it's practical. Think about it: a custom armor set costs thousands. It takes two people half an hour to put it on and take it off. There's no way I'm taking it off in the middle. With this, I can drink water and not worry about having to hold it."

Another cosplayer said: "I thought it was ridiculous the first time I heard about it. But then I realized, several of the big-name cosplayers who do heavy armor use them. It's not about being sick or old—it's a reasonable sacrifice for what you love."

3. Why Pull-Up Pants? — From Shame to Practicality

Why have pull-up pants become the choice for some heavy-armor cosplayers? The reasons are simple:

First, costumes are too difficult to remove. A complex costume may consist of dozens of pieces that require assistance to put on. Once on, it's nearly impossible to remove independently. Using a restroom mid-day would mean disassembling everything—time-consuming, potentially damaging to the costume or makeup.

Second, convention facilities are limited. Convention restrooms are often crowded and cramped. There's simply no space to lay out costume pieces, let alone re-don them.

Third, hygiene considerations. Public restroom floors are often damp and unsanitary—cosplayers aren't going to place their meticulously crafted costumes on them.

Fourth, time costs. A full removal and re-donning process can take 1-2 hours, meaning missing a huge portion of the convention's activities and photo opportunities.

Given these practical considerations, pull-up pants offer a simple, clean, discreet solution. They don't require removing clothes, don't take up space, don't affect the costume's appearance, and allow cosplayers to enjoy their day with peace of mind.

4. Beyond Conventions: Other "Once It's On, It's On" Scenarios

Pull-up pants have applications far beyond conventions.

Marathon runners: Professional athletes sometimes wear pull-up pants during races to avoid losing momentum by stopping for restroom breaks. It's not shameful—it's professional.

Long-distance drivers: When stuck in a highway traffic jam with no rest stop in sight, pull-up pants can be a lifesaver.

Concertgoers: A concert can last 3-4 hours, and in a packed crowd, getting out is nearly impossible. Experienced fans come prepared.

Campers: Out in the wilderness, especially on cold winter nights, leaving the tent to use the bathroom can be a painful ordeal.

Healthcare workers: Surgeons performing 10+ hour operations sometimes rely on this "secret weapon."

In these scenarios, pull-up pants are no longer just "incontinence products"—they've become functional gear for situations where restroom access is limited. At their core, they serve one purpose: allowing people to stay composed and dignified when they can't access a bathroom.

5. When Passion Meets Technology: What Kind of Pull-Up Pants Deserve a Cosplayer's Trust?

For cosplayers, not just any pull-up pants will do. When you're wearing them for 10+ hours, the quality of the product can make or break your day.

First, they need to be thin and invisible. Cosplay costumes are often tight or form-fitting. If the pull-up pants underneath are too bulky, they'll create an awkward outline that ruins the character's silhouette. This demands ultra-thin design—barely noticeable when worn.

Second, they need to breathe. Conventions are held in large exhibition halls, often crowded, with poor air circulation. Costumes themselves are heavy and insulating. If pull-up pants don't breathe, hours of wear will leave skin red, itchy, and uncomfortable—a nightmare for cosplayers who need to stand, walk, and pose for extended periods.

Third, they need fast absorption and no rewetting. The core function is emergency use. When the moment comes, they must absorb instantly and never rewet—otherwise, persistent dampness becomes not just uncomfortable but a potential skin issue.

Fourth, they need a secure, flexible fit. Cosplayers walk, squat, pose—their bodies are in constant motion throughout the day. Pull-up pants must move with them, staying in place without shifting, sagging, or chafing.

These requirements align perfectly with the technology developed by Jiangsu Noda Hygiene Products Co., Ltd.

6. Jiangsu Nuoda: Using Technology to Support Every Passion

Founded in 2018 and headquartered in Changzhou, Jiangsu Province, Jiangsu Noda Hygiene Products Co., Ltd. is a specialized manufacturer focused on developing and producing adult incontinence care products. The company operates a 20,000-square-meter modern manufacturing facility with 10,000 square meters of logistics and warehousing space, equipped with three fully automated production lines capable of producing 180,000 adult pull-up pants per day.

But production capacity is only part of the story. What truly sets Noda apart is its commitment to product excellence.

Exceptional Absorption Capacity: 800x Lock-In Power

Noda's adult pull-up pants use high-absorbency polymers imported from Japan, capable of absorbing 800 times their own weight in liquid—significantly higher than the industry average of 500 times. For a cosplayer spending an entire day at a convention, this means absolute confidence: absorption capacity is never a concern.

Minimal Rewetting: ≤0.3% Dryness Assurance

Through a dual-layer flow distribution design, Noda products achieve a rewetting rate of ≤0.3%, compared to the industry standard of 3%. What does this mean in practice? When the product is used, the skin-contact surface remains dry, eliminating uncomfortable dampness. For cosplayers in heavy costumes for hours on end, this is essential.

3D Breathable Technology: No More Stuffiness

The top sheet of Noda pull-up pants features a 3D embossed non-woven fabric with perforations, increasing air circulation by 40% compared to standard materials. The back sheet combines PE film with breathable micro-pores, balancing leakage protection with airflow. Whether it's a sweltering convention hall in summer or layers of heavy costuming, the skin stays dry and comfortable.

Ergonomic Fit: Stays in Place

Designed with elastic waistbands and an ergonomic cut, Noda pull-up pants conform closely to the body's contours. Whether a cosplayer is walking, crouching, or striking a pose, the pants move naturally with each motion—no shifting, no sagging, no chafing.

Certified Quality You Can Trust

Noda products have earned CE, FDA, and ISO 13485 (Medical Device Quality Management System) certifications, and comply with EU REACH regulations and U.S. ASTM standards. In one notable case, after a Finnish nursing home switched to Noda underpad products, the rate of skin breakdown among elderly residents dropped from 15% to 2%, with a 100% reorder rate. The same quality standards apply to cosplayers seeking the best experience at conventions.

7. Conclusion: From Shame to Wisdom

Let's return to the original question. What do cosplayers wear under their costumes at conventions?

Most cosplayers wear standard seamless underwear and base layers. But for those who choose heavy armor, latex suits, or voluminous gowns, there's a more practical choice: pull-up pants.

This isn't about shock value or shame. In a community driven by passion for bringing characters to life, it's another expression of commitment: "I'm willing to make behind-the-scenes compromises to present the best version of the character I love."

One veteran cosplayer put it well: "Cosplay is about passion. The moment I put on the costume, I am that character. I'm not going to let something as small as a bathroom break break that immersion."

Jiangsu Noda's mission is to use technology to support that passion—ensuring that nothing gets in the way. Whether for cosplayers at conventions, runners on the marathon course, or anyone facing a situation where restroom access is limited, Noda pull-up pants provide confidence, comfort, and dignity.

When passion meets technology, what was once considered "shameful" becomes simply "smart." That's what Jiangsu Noda has been working toward all along.

This article is based on publicly available information within the cosplay community and anonymous interviews with cosplayers. Special thanks to everyone willing to share their authentic experiences.

About Jiangsu Noda Hygiene Products Co., Ltd.

Jiangsu Noda Hygiene Products Co., Ltd. is located in Changzhou Economic Development Zone, Jiangsu Province, China. With 20,000 square meters of modern manufacturing space and three fully automated production lines, the company has an annual capacity exceeding 180 million units. Its product range includes adult pull-up pants, adult diapers, underpads, and related care items. All products are certified to CE, FDA, and ISO 13485 standards and are exported to markets across Europe, the Americas, and worldwide.

For more product information or to request a sample, please visit: https://jsnoda.com/ or call: +86-519-85280187