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Vesuvius Sports Boxer

Vesuvius Sports Boxer

4.9
Rated 4.9 out of 5 stars
322 Reviews
Regular price $ 36.00 USD
Regular price $ 36.00 USD Sale price $ 36.00 USD
Sale Sold out

5" Inseam, Seamless Hems, Caldera Pouch, StealthFly, 95% MicroModal

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📦 $5 Flat Rate Shipping in US on all orders under $150

🚚 Orders ship within 1-2 business days

💸📦 Free Shipping in US over $150+

The Details

Let It All Hang.

Vesuvius Next Gen Sports Boxer features the all-new Caldera Pouch—an extra-large, single-ply front pouch that cascades down, providing a natural, unrestricted feeling, almost like being naked. To enhance this experience, our exclusive low-profile StealthFly ensures no accidental escapes and offers discreet, easy access.

Vesuvius Next Gen Sports Boxer is the most natural-feeling underwear you ever tried.

With a sporty 5" inseam and ultra low-profile seamless hems, they will stay put without pressure, invisible under your pants, and won't roll or bunch up.

Form-fitting ultra-premium 95% MicroModal fabric holds you softly and leaves you fresh all day.

Wide and ultra-smooth waistband won't flip or mark your skin.

Inseam: 5 inches

52 Wash Guarantee. Because we can.

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

Find your size

You'll need a a pair of your existing underwear, a flat surface, and a measuring tape.

THE FEATURES YOU ASKED FOR

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

Close up of Vesuvius with inverted fly in Hana Green

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 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.

Closeup of Vesuvius Boxer Brief's seamless leg openings.

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. Enjoy the freedom of movement and the confidence of a perfectly polished appearance with the low-profile seamless hems on Vesuvius Next Gen.

HEY ALEX, I HAVE QUESTIONS!

What's the Caldera Pouch?

Our new Caldera Pouch is a reimagined front pouch, featuring a U-shape design that offers a natural feel and relaxed support.
It's not designed for vigorous activities, because it's like you are Going Commando, but without sticking to your legs.
The innovative design gently cradles your genitals, allowing them to naturally fall into place for a super comfortable and natural fit.
Crafted from a single layer of our ultra-thin 95% MicroModal fabric, the Caldera Pouch offers a barely-there sensation while providing all-day comfort and breathability.

What should I know about the fit?

The Vesuvius Next Gen Sports Boxer is designed with a 5" inseam. The hems on the leg openings are seamless, for a stealthy look and supreme comfort, besides staying put all day.
They are long enough to cover enough of your legs to add a wide layer of protection from chafing, while still staying inside your shorts.
The Caldera Pouch is designed to be large enough to provide you a lot of elasticity and room, while being single-layered to provide a loose feeling like Going Commando.

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.

All Krakatoa Pouches are 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 SPORTS BOXER IS BEST FOR ME?

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

  • Vesuvius boxer briefs with pouch shown with 5" inseam

    U-Shaped Caldera Pouch
    Low-Profile StealthFly
    Seamless Hems

    Learn More 
  • Haleakala boxer briefs side view with pouch shown in 5" inseam

    Closed, Lined StratoPouch
    4" Sealed Pouch
    Seamless Hems

    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 322 reviews
Total 5 star reviews: 299 Total 4 star reviews: 20 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 0
99%would recommend this product
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322 reviews
  • Keyser S.
    Verified Buyer
    Rated 5 out of 5 stars
    Life changing underwear

    I stopped wearing underwear about 20 years ago because I could never find a brand/pair that I wanted to wear on a daily basis. They were always too tight, squishing down my girthy bulge into a flat hot pocket. Sure… if I was dressed nice for a business dinner, wedding, a formal event, or in a suit or some slacks I would wear/tolerate the underwear I had. But if I was in daily jeans or shorts I’d be free swinging. I tried various styles and fabrics and brands over the years. Always just throwing them out, until now. I then discovered Krakatoa and ordered a pair for every day of the week. My Krakatoa underwear are, without question, the only underwear I’ve enjoyed wearing on a daily basis in over 20 years. I’m a muscular 5’9” and 238 lbs. and have a 36” waste with 29” thighs. I wear the Vesuvius 1.5” in an XL and the Vesuvius 5” in an XL. And I genuinely can’t imagine wearing any other underwear again. Thanks for helping “my boys” find a home again.

  • LaDarius W.
    Verified Buyer
    Rated 5 out of 5 stars
    Love These!!

    Spacious pouch and love the color and fit!! I'm a small and I ordered a small, so true to size!!

  • Olivia
    Verified Reviewer
    Rated 5 out of 5 stars
    From a woman's perspective

    Not sure if women see these reviews or if men care, but I thought I'd share my thoughts. My husband bought the Vesuvius Sports Boxer briefs and I love them. He looks

    magnificent in the Caldera pouch. Incredible. I just bought him 4 more. Just love the way these briefs highlight his amazing masculinity. Ladies, get these for your man. You'll love him for it!

  • Derek H.
    Verified Buyer
    Rated 5 out of 5 stars
    Best ever for everything

    Hands down the best customer service I’ve ever received, get directly on the phone with the founders and get real help with real people and no BS.

    They replaced my package that went missing immediately and I received the underwear I’ve ever had the experience of putting on. Customer for life has been secured

  • HJ
    Verified Buyer
    Rated 5 out of 5 stars
    Where have these been all my adult life??

    These are genius and amazing - as a larger "shower" I have struggled with boxer shorts, briefs etc my whole life. Constantly having to rearrange the crown jewels and the magic stick got tiring, embarrassing and often downright painful. This is now a thing of the past - thanks to the generous pouch, everything rests comfortably in there and nothing squeezes on anything. I almost feels like not wearing anything yet better as nothing dangles in the way.

    I wish the waistband was stronger (could also do without the messages inside!!) as I do have to pull them up occasionally but apart from that - insanely happy with my purchases.

    Plus side - the wife has taken a renewed interest in me walking around in boxer briefs...thanks for that!

  • Ross B.
    Verified Buyer
    Rated 5 out of 5 stars
    Finally!!

    I had long loved a brand of underwear that unfortunately went out of business. I spent hundreds upon hundreds of dollars trying to find something that could replace them, but nothing worked. I even resorted to making my own underwear with a sewing machine. Then I finally found these! These underwear do everything that I want them to do. They protect my legs from chafing and they protect my jewels with plenty of space. Thank you so much Krakatoa!

  • Isaac S.
    Verified Buyer
    Rated 5 out of 5 stars
    Sweenis BE GONE!

    As a large man (I'm 6'3" 185 lbs with a size 14 shoe, you can do the math) the underwear industry seems like it's catering to manlets and Asian men (sorry guys, it's just genetics). It was a breath of fresh air (ask my wife) to discover underwear that makes room for guys who aren't hung like a chinchilla. Gone are the days of me trying to fit my manaconda in the space designed for a field mouse. No more "duck walk" or poking and prodding as I try to rearrange the meat and potatoes. A small child may have even witnessed this weird dance and is now traumatized for life. If you think about it, this underwear is contributing to the betterment of society as a whole! Not only have they given feminists one less thing to complain about, but they've empowered men to go hands free in hot weather. The fly is great too. I no longer have to drop my underwear to my knees when peeing in a urinal publicly. Gone are the weird looks and I no longer have to suffer the embarrassment of having my buttocks admired while I'm trying to evacuate my bladder peacefully. Trust me, you need a pair of these for each day of the week. If you don't believe me I'd be happy to personally convince you.

  • Kev L.
    Verified Buyer
    Rated 5 out of 5 stars
    FINALLY

    Finally found the most comfortable underwear in the world, they have true separation and made of so soft material, I love these

  • Terri W.
    Verified Buyer
    Rated 5 out of 5 stars
    Hot and happy!

    I have spent a fortune on underwear for my husband that could resolve the problem of chafing due to the southern summer heat. They all promised great things but never delivered. When I first ordered these I only ordered one pair because honestly I didn't trust their promise. Well, the first pair came and boy did they deliver! Finally my husband can work in the hot southern heat and not be uncomfortable. We ordered 4 more pair and he can't wait for them to arrive.

  • Matthew C.
    Verified Buyer
    Rated 5 out of 5 stars
    Great undies, better company.

    First and foremost it took a few tries, but I found a size and fit that was right for me. Yes, they are more expensive than other options out there, but you aren't just paying for underwear. They went above and beyond to ensure I was satisfied. I'm on the taller side, with a smaller waist and I guess a bigger butt and the sizing took a few tries. As they helped me with this process I could tell the passion they have to make people happy and I'm more than willing to pay a few extra dollars to good people who run an honest company. I will be buying more in the future.