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Vesuvius Seamless Thong

Vesuvius Seamless Thong

4.9
Rated 4.9 out of 5 stars
211 Reviews
Regular price $ 30.00 USD
Regular price $ 30.00 USD Sale price $ 30.00 USD
Sale Sold out
Shipping calculated at checkout.

Ultra-Thin 4" Deep Pouch, Seamless String, Minimal Profile

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🚚 Orders ship within 1-2 business days

💸📦 Free Shipping in US over $150+

The Details

The Thong Supreme

With the elastic, ultra-thin, single-ply Caldera Pouch, and its seamless hems and string, the Vesuvius Seamless Thong offers the most natural feel in the entire lineup.

It provides minimal lift, allowing you to hang naturally and experience everything that touches it.

The paper-thin seamless string at the back has the smallest footprint of any Krakatoa Thong, making it almost imperceptible.

A single ply of form-fitting, ultra-premium MicroModal fabric wraps the drop-down pouch, delivering an incredibly soft touch all around.

1st Order Fit Guarantee

Our number one goal is that you're happy with your purchase.

Try on a single pair and make sure it's perfect for you.

If you bought multiple pairs, make sure you try ONLY ONE PAIR for fitting purposes.

After this first pair, all underwear must be unworn, unwashed, in the original condition and packaging you received them in for a refund.

Due to the nature of our product we cannot accept returns of worn products. We will only be able to provide store credit for worn products limited to your first pair.

Please contact us directly at hello@krakatoaunderwear.com to discuss options.

52 Wash Guarantee

We want you to feel confident making your purchase from us. We provide a 52 Wash Guarantee which is triggered by either 52 washes or 12 months from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect before 52 washes or 12 months, we'll replace them for just the cost of shipping.

The guarantee excludes damage caused by neglect or abuse, by intentional damage, accidental damage, color fade, pilling, stains of any kind, and deliberate attempts to damage the product.

Applies to any product purchased, does not apply to any product provided as a replacement.

Send us an email at hello@krakatoaunderwear.com with the subject "52 Wash Guarantee Claim". Please be sure to include photos of the damage. We will be in touch shortly after.

Full details can be found HERE.

View full details
Close up of the seamless thong.

GO COMMANDO-ISH
All of the Freedom, None of the Slap and Stick.

The Vesuvius Seamless Thongs are perfect for guys that prefer maximum flexibility and thinness, with a quasi-freeballing feel.

The seamless constructions allows for a minimal footprint on the back string, so they won't bother you even during all day wear.
Its minimalist profile allows for full freedom of movement, and maximum breathability.

Whether you're hanging out or making out, the Vesuvius Seamless Thongs are so comfortable, you'll forget you're wearing them.

But you will love every time you put them on.

Close up of the seamless thong.

SLIDE INTO NOTHING
Feel Everything.

The Vesuvius Seamless Thong delivers maximum comfort in a minuscule package for your package.
The back strap is paper-thin thanks to the seamless construction, making it almost imperceptible.

They feel incredible during a variety of activities -whether you’re lounging at home, making out, or crushing it at the gym under shorts or tights.

Once you embrace this everyday luxury for your privates, getting dressed in the morning will never be the same again.

Great for: Walking, Dancing, Exercising, Making Out, Getting Frisky.

micromodal v. cotton macro photo comparison

THE FINEST MICROMODAL FABRIC
Exceptional Softness and Breathability.

No synthetics here -and no PFAS.

Feel softness like never before with an ultra-premium, hand selected 95% MicroModal fabric. We source only the best MicroModal because comfort is our #1 goal. (Learn about MicroModal). We just add 5% of Spandex to allow for it to move with you.

We never skimp on the quality of our fabrics and materials, neither on the craftsmanship. These products go on your softest, most sensitive parts. We won't settle for anything less than the very best.

Colorful waistbands in a square image.

UNFLIPPABLE WAISTBAND
Art On Your Body.

Our waistbands are wide, smooth, don't leave marks, and are truly unflippable, offering a secure fit that prioritizes style and your comfort over branding. We focus on modern designs rather than flashy logos, framing your body beautifully.

Inside, you’ll find positive, self-affirming words designed to motivate you daily, inspiring you to be a better person to yourself, and to those around you.

Experience the perfect blend of style and substance with a waistband that uplifts and empowers you.

HEY ALEX, I HAVE QUESTIONS!

How thin and flexible is the Caldera Pouch?

The Caldera Pouch is single-ply, as elastic as the fabric allows, and incredibly sensitive to the touch -enhancing your experience whether alone or with company.

What should I know about the fit?

The Vesuvius Seamless Thong has an ultra-thin pouch to separate you from your legs, and give you the utmost freedom in underwear. The drop-down design of the Caldera Pouch provides no lift, but it's the most natural feeling of all Krakatoa pouches. It's the closest thing to Going Commando, so you can let it all hang -in comfort.

What if I'm in between sizes?

Our sizes run pretty true and the materials do have stretch to them.

But if you're not sure which size is going to be the best for you, consider these three things:- Your waist in inches (pants size is OK).

- If your legs touch at the thighs.
- If you have a small, normal or large butt.

If your legs touch and your butt is large, you might jump a size.

If you have a small butt and thin legs, you can downsize.

What's MicroModal fabric?

In a word. Soft.

Really soft, our MicroModal is hand-selected to be of the highest grade available.

MicroModal is a modern technical fabric that is manufactured with cellulose from renewable Beechwood trees. Compared with Cotton, it's odor-resistant, 3 times softer, 50% more breathable, and it's not nearly as polluting or water-wasting.

Why such a big pouch?

Men come in all different shapes and sizes but for years underwear failed to respect our anatomy.

Our pouch is designed for the majority of men out there to accommodate and coddle. It's a blend of being soft with some stretch where needed, but also supportive for all day comfort. You won't need to adjust yourself anymore, because sticking to your legs is a thing of the past.

When will my item ship? How long will it take to arrive?

Please allow 2-4 days for processing, and the usual shipping times from the USPS or UPS: inside the US you can expect to see your package between 3-6 days.

We'll send you a confirmation email with your tracking information as soon as it ships.

If you have any questions or don't receive an email, feel free to reach out via our Contact Us Page.

What is your returns and refunds policy?

All returns are available for 60 days following their delivery date.

We’re happy to accept any items that are unused, unopened, unworn, and in their original packaging.

WE ARE UNABLE TO ACCEPT ANY PRODUCTS THAT HAVE BEEN WORN.

We strongly encourage you to add shipping insurance and hassle free returns to your orders as it appears in the cart, especially if it’s your first order.

We strongly recommend that you only try on only one pair for sizing purposes.

You can start a return at any time in our Returns Portal.

Given the nature of our product, and for health and safety reasons, we are unable to provide exchanges at this time.

Buyer will be responsible for any associated return shipping costs.

How do I wash my Krakatoa?

Krakatoa is quite resistant to shrinking and fading, but machine-washing them in cold water using the delicate setting and drying in low heat will keep them looking fresher for longer.

Please do not bleach, iron, or dry clean your boxer briefs or trunks. You can also wash it by hand and lay it flat to dry, for great results.

What's your 52 Wash Guarantee?

We want you to feel confident making your purchase from us. We provide a 52 Wash Guarantee which is triggered by either 52 washes or 12 months from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect before 52 washes or 12 months, we'll replace them for just the cost of shipping.

The guarantee excludes damage caused by neglect or abuse, by intentional damage, accidental damage, color fade, pilling, stains of any kind, and deliberate attempts to damage the product.

Applies to any product purchased, does not apply to any product provided as a replacement.

Send us an email at support@krakatoaunderwear.com with the subject "52 Wash Guarantee Claim". Please be sure to include photos of the damage. We will be in touch shortly after.

Full details can be found HERE.

WHICH THONG IS BEST FOR ME?

Each Krakatoa Thong comes with a specific pouch.
While they all share the same absurdly soft fabric and unflippable waistband, their pouches are what set them apart.
Here is a quick guide:

  • Herculaneum Blue men's thong featuring a single layer modal pouch without a fly and patterned waistband. Front Image.

    VESUVIUS SEAMLESS THONG

    Single-Ply MicroModal Pouch
    Ultra-Thin Back String

    Learn More 
  • Haleakala thong in lahaina red front view with stratopouch and smooth string

    HALEAKALA LINED THONG

    Perforated Lined Pouch
    Folding Back String

    Learn More 
  • Luzon blue men's thong featuring a contoured Pouch with double modal lining for support without a fly and patterned waistband. Back Image.

    PINATUBO NO-LINER THONG

    Double-Ply MicroModal Pouch
    Folding Back String

    Learn More 

CHECK OUR REVIEWS

See how we have impacted guys from all walks of life.
Our products are only as good as the impact they have on those that experienced them.

4.9
Rated 4.9 out of 5 stars
Based on 211 reviews
Total 5 star reviews: 194 Total 4 star reviews: 9 Total 3 star reviews: 6 Total 2 star reviews: 1 Total 1 star reviews: 1
97%would recommend this product
Slide 1 selected
211 reviews
  • Desire W.
    Verified Buyer
    Rated 5 out of 5 stars
    For Real Men

    Krakatoa is the number one brand that is made for men by men. These new thongs are a game-changer and give me a massive boost to my masculinity and confidence. Not only is the material they are made out of the absolute best I've ever felt, but the way it stretches and holds everything in place is the best thing about it. You can't get this type of love and care from any other brand of underwear on the market. Definitely worth the price.

  • Ian
    Verified Buyer
    Rated 5 out of 5 stars
    The dog's bollocks

    I’ve been a thong guy since my early 20s and have tried pretty much every “premium” brand out there. Seriously, nothing I’ve ever worn even plays in the same league as the Vesuvius.

    The fabric is unreal, so thin and soft it honestly feels like you’re wearing nothing at all, yet it still gives proper support and keeps everything perfectly in place. The pouch is spot-on for my meat and two veg: roomy enough that there’s zero squeezing or readjusting, but secure enough that you forget it’s there.

    I’m genuinely planning to throw out every other pair I own and replace them all with Vesuvius thongs. If you’ve been on the fence, just do it. These are end-game underwear. 11/10.

  • PETER S.
    Verified Buyer
    Rated 5 out of 5 stars
    Next to naked

    Besides the obvious lack of coverage, these really do feel like there's nothing there. I was worried that the pouch may be a bit too extra, but in fact, it gives just enough support and the single layer of fabric affords nice wiggle room and breathability. Great for hot climates like S. Florida.

  • Brooks
    Verified Buyer
    Rated 5 out of 5 stars
    1st Thong - It Is AMAZING!

    I’m starting to wear more form fitting clothes these days and needed something more “no-show” and this pair delivered! Not only that, it is terrific for the gym when you need a little extra air flow during those tough workouts. The textile is so incredibly buttery soft and feels insanely comfortable. I really do love the seamlessness of the design, super nice. The star of the show is the pouch - your package falls perfect into the well thought-out pouch, and makes you look and feel huge. Instant boost of confidence! Honesty, I want to buy more colors. Another 10/10 from Alex and the Krakatoa team. Zero hesitation recommending this thong!

  • Terry L.
    Verified Buyer
    Rated 5 out of 5 stars
    join the thong club

    I wasn't sure I was a thong kind of guy but based on reviews I thought I'd try them. Wow! That seamless strap just disappears into your ass unseen and unfelt all day. The pouch gives you the sensation of freeballing but without the sticking, pinching, or chaffing. These will definitely be in my underwear rotation during the hot summer months. My man parts are grateful to you again, Alex.

  • Michael M.
    Verified Buyer
    Rated 5 out of 5 stars
    First pair

    I don’t usually wear thong-style underwear, but after reading the reviews, I decided to step outside my comfort zone and try something different. I’ll be wearing these on a romantic weekend with my wife — and based on the fit and look, I’m confident they’ll make the right impression.

    I was looking for comfortable, supportive, enhancing underwear at a fair price, and this pair delivers. The reviews were strong, though I was skeptical about the Vesuvius pouch. It’s not marketing hype. The support is solid, and the enhancement looks natural and flattering without feeling exaggerated.

    I typically wear a large, but I followed the size chart and ordered a medium. For reference: 5'8.5", 172 lbs, 34/31, average build. The medium fits perfectly — secure, comfortable, and confidence-boosting. The one-ply liner takes a little getting used to, but once on, it feels great.

    Stepping outside my norm paid off. Great fit, strong design, and definitely worth adding to the rotation.

  • Darrell T.
    Verified Buyer
    Rated 5 out of 5 stars
    First Thong; Don't Regret A Thing.

    After trying the Pinatubo Boxer Briefs for work, (also 5 stars) the wife and wanted to try something a little "spicier". Lo and behold, the Vesuvius Seamless. I was a bit skeptical. As a straight guy, trying thongs seemed a bit wrong. However, the wife loved it, said it was sexy, without revealing everything, and she absolutely loves how soft the micro modal material is. When I wore these for the first time, after about an hour, I had panicked, because I thought I forgot to put on underwear. They are comfy on whole level I never knew existed. I'm not a small guy, either. 340lbs, 5'8". I ordered the 1XL, and it was perfect. Bought a second one in red, the wife's favorite color.

  • William H.
    Verified Buyer
    Rated 5 out of 5 stars
    Perfect Thong for Men

    Finally Found the Perfect Thong: Vesuvius Seamless by Krakatoa

    After years of trying MeUndies, Tommy John, and Cocksox, I can confidently say the Vesuvius Seamless Thong from Krakatoa has completely changed my underwear game.

    Superior Support and Stability

    The support is exceptional. Unlike MeUndies, which feel too relaxed and lack structure, the Vesuvius keeps everything exactly where it should be throughout the day. Tommy John makes a decent product, but even their best doesn't match this engineered support. One of my biggest frustrations with Cocksox was the constant shifting and adjusting—the Vesuvius stays in place no matter what I'm doing. No bunching, no riding up, no readjusting needed.

    Seamless Perfection

    The seamless construction means zero visible lines under fitted clothing—something neither MeUndies nor Tommy John have truly perfected. While Cocksox attempts a seamless design, the Vesuvius actually delivers with superior fabric technology that feels like a second skin.

    Cool, Comfortable, and Stylish

    The fabric breathability is noticeably superior. Where MeUndies can feel warm and Tommy John's modal blend doesn't breathe enough for active days, the Vesuvius keeps me cool and comfortable from morning to night. The waistband design is sharp and modern—it actually looks good.

    If you're on the fence about trying the Vesuvius Seamless, just do it. You won't go back.

  • Daniel G.
    Verified Buyer
    Rated 5 out of 5 stars
    Incredibly Comfortable and Seamless

    These are hands down the most comfortable thongs I've ever owned! The seamless design means no visible lines and the fabric is so soft against my skin. They stay in place all day without any adjustments needed. The quality is excellent and they've held up perfectly after multiple washes. Definitely worth every penny and I'll be ordering more colors!

  • Brenden B.
    Verified Buyer
    Rated 5 out of 5 stars
    The Perfect Pair

    I wanted to wait one wash before reviewing and now I know that I’ve found the perfect thing. I’ve been wearing the style for years and I thought I’d tried all the brands. Now I’m only going with Krakatoa. I’ll be cycling them in for the foreseeable future. So freaking comfy.