Power Green men's thong featuring a single layer modal pouch without a fly and patterned waistband. Front Image.

Vesuvius Seamless Thong

Power Green / Waist 38"-40" (L)
$ 30.00 USD
Sale price  $ 30.00 USD Regular price  $ 30.00 USD
Skip to product information
Power Green men's thong featuring a single layer modal pouch without a fly and patterned waistband. Front Image.

Vesuvius Seamless Thong

4.9
Rated 4.9 out of 5 stars
235 Reviews
$ 30.00 USD
Sale price  $ 30.00 USD Regular price  $ 30.00 USD
  • 4” Deep Single Layer Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Construction
  • ESTIMATED RESTOCK MAY
ColorPower Green
Size
Fit
  • Midrise
  • Form-fitting
Specs & Features

4" Deep Pouch

Cupping 4" deep pouch that provides plenty of room and support.

95% MicroModal / 5% Elastane

The perfect blend of soft, yet structured to ensure that it maintains shape all day and doesn't stretch out.

Lay Flat Waistband

1.5" wide lay flat waistband that will not roll, bunch, or pinch.

Seamless Hems

Hems designed to stay tight all day and not loosen as the day goes on from movement. No one likes legs that ride up.

Materials & Care Instructions

95% MicroModal 5% Elastane

Care Instructions

Machine Wash Cold, Gentle Cycle, Do Not Bleach, Tumble Dry Low, Do Not Iron

WHAT SETS US APART

Every little detail was obsessively fine-tuned, to deliver you an underwear experience like no other:

THE CALDERA POUCH
Super Thin and Flexible, with StealthFly.

Elevate your comfort game with the all-new Caldera Pouch, designed for the ultimate in relaxation and ease. Slip into a world of barely-there comfort with our deep and low single-ply design, offering incredible flexibility and sensitivity. Experience a gentle embrace that feels like second skin, cradling your most delicate areas with care. The new StealthFly is the exclusive horizontal fly from Krakatoa, incredibly easy to use and barely noticeable.

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 Tencel 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.

Close up of seamless hems

FLAT SEAMLESS HEMS
For Legs That Stay Put.

Seamless hems are a game-changer, offering unmatched comfort and a sleek look under any outfit. Their innovative design ensures they stay put without pinching or leaving marks, providing a smooth, barely-there feel against your skin.

Perfect for any activity, seamless hems eliminate visible lines, giving you a flawless silhouette even under the most form-fitting pants.

4.9
Rated 4.9 out of 5 stars
Based on 235 reviews
Total 5 star reviews: 216 Total 4 star reviews: 11 Total 3 star reviews: 6 Total 2 star reviews: 1 Total 1 star reviews: 1
97%would recommend this product
Slide 1 selected
235 reviews
  • CB
    Verified Reviewer
    Rated 5 out of 5 stars
    First time thong wearer

    Older fella and I wanted to feel young again. The vesuvius didnt disappoint, although I was a little concerned about the strap. Must say, I am a convert. Thanks for making me feel sexy.

  • Carlos C.
    Verified Buyer
    Rated 5 out of 5 stars
    Exceptional Support & A Surprise New Favorite

    On my first purchase from Krakatoa, I had a bit of a "fit fail." However, the way their team handled it is a perfect example of why they have such a loyal following.

    I emailed asking for help, and Alex reached out personally to address my concerns. I later learned that one of the many hats Alex wears is lead designer, so I’m confident that feedback goes directly toward product improvements rather than getting lost in some random queue.

    Alex suggested making the move to the Vesuvius Thong. I have to confess I’d never worn a thong before, but after trying it, I think I’m a convert!

    Pouch Depth: The pouch is incredibly accommodating, and the flexible fabric allows for total freedom.

    Stability: The waistband stays exactly where it should—no more rolling down or constant adjustments.

    Comfort: The seamless string is incredibly elastic and comfortable for all-day wear.

    Thanks, Alex—I’ll definitely be getting more!

  • Mike C.
    Verified Buyer
    Rated 4 out of 5 stars
    Glad I made the leap.

    I am starting to really like these. The pouch is just right and they look great. I do wish they were just a tad more low rise. But I will be ordering another pair when they get in stock.

  • 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!

  • Nick C.
    Verified Buyer
    Rated 5 out of 5 stars
    Who would wear boxers after these?!

    The absolute level of comfort and security these offer are second to none. I started out getting a few pair of the briefs and enjoyed how they felt. So I gave the thong a try and I’m never going back! Can’t recommend them enough!

  • Luke
    Verified Buyer
    Rated 5 out of 5 stars
    The (almost) 6 Month Test

    I have put off this review for awhile for one reason: longevity.

    Firstly, men's thong underwear needs to be normalized. Secondly, it needs to be more like the Vesuvius.

    The TLDR review is: buy this underwear!

    I have slept, worked out, chilled out, and washed out (sorry, I needed one more!) in these underwear and they have not let me down. They make my jeans MORE comfortable, which is wild. They fade into the background, to the point that I forget I'm wearing them. I have seamless options from other brands, and the Vesuvius is the one I reach for every change I get. The way Alex and team have designed the fabric to hold up - literally and figuratively - after nearly 6 months of wear and wash is second to none. And the color is awesome! Vibrant, and it doesn't fade.

    10 out of 10. No notes. I will be getting the other colors once they are back in stock in my size, maybe even two of each, unless Alex makes more colors!

  • Walter P.
    Verified Buyer
    Rated 5 out of 5 stars
    AMAZING!

    Smooth. Soft. Comfortable. What else do you want? Alex and the crew have found perfection in underwear. Period.