Gray men's briefs underwear with a patterned waistband showcasing the Caldera Pouch design for support and a seamless hem.

Vesuvius Briefs

Stone Gray / Waist 34"-37" (M)
$ 30.00 USD
Sale price  $ 30.00 USD Regular price  $ 30.00 USD
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Gray men's briefs underwear with a patterned waistband showcasing the Caldera Pouch design for support and a seamless hem.

Vesuvius Briefs

4.9
Rated 4.9 out of 5 stars
518 Reviews
$ 30.00 USD
Sale price  $ 30.00 USD Regular price  $ 30.00 USD
  • Horizontal Fly
  • 4” Deep Single Layer Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
ColorStone Gray
Size
Fit
  • Midrise
  • Form-fitting
Specs & Features

Horizontal Fly

Easy access horizontal fly that makes it a breeze to access your parts.

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 518 reviews
Total 5 star reviews: 471 Total 4 star reviews: 40 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 0
99%would recommend this product
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518 reviews
  • Mando R.
    Verified Buyer
    Rated 5 out of 5 stars
    Vesuvius - not just for big dongs!

    If you think the Vesuvius pouch might not be for you just because you're a grower or you are average (or both, like me!), then I'm here to tell you to reconsider. Vesuvius means the freedom to hang!

    The Vesuvius briefs offers support and organization (to keep your balls from sticking to your legs) *even* if you don't fully fill the pouch. In this case, you get to enjoy some hang like you're in boxers within the confines and support of the pouch.

    I came to Vesuvius briefs on the search for a brief style that allowed my balls room to hang like some of my favorite AC jocks. I do like the pouch on the Pinatubo briefs (and I own several of these!), but the Vesuvius gives my average dong some pleasant room to breathe and hang for days that I want that.

    ** A note on the stealth fly: I'm not a fan of the fly layers organizations. It's easy to slip your hand through the fly and miss your goods entirely when you need to throw a hand down there to reorganize. It takes some getting used to. This isn't enough to take away a star, but it is an annoyance.

  • Edward P.
    Verified Buyer
    Rated 5 out of 5 stars
    Great underwear

    These briefs are amazing….soft and comfortable and they feel light and sexy….will definitely purchase some more probably a size up

  • Timothy H.
    Verified Buyer
    Rated 4 out of 5 stars
    First Try

    After seeing several adds and then starting to see them on others I decided to give them a try. It did take a while to get or maybe I was just impatient to get them. They fit perfectly. The material is soft and hugging without being too tight. I love the fly design. It allows me to stay dressed during the work day (my shirt and undershirt stay tucked in) and still get access to pee when I need to.

    I'd be interested in exploring more colors and designs.

  • NC
    Verified Buyer
    Rated 5 out of 5 stars
    A Brief Review 😉

    As someone who has always been turned off by tighty whitey's, I'm not usually the kind of guy that rocks 'em high 'n' tight but you folks at Krakatoa have completely changed my mind. The pouch is second to none, and the whole kit and kaboodle feels like my kit's gone commando. Already loved the Vesuvius boxers, now I'm a brief guy too thanks to ya'll. Krakatoa for life!

  • C
    Verified Buyer
    Rated 5 out of 5 stars
    Fits the best of any pouch briefs!

    Super comfy and looks amazing. New favorite brand.

  • Micah K.
    Verified Buyer
    Rated 5 out of 5 stars
    Really incredible fit and feel!

    This underwear hits the sweet spot between full support and comfort really well!

  • Jack
    Verified Reviewer
    Rated 5 out of 5 stars
    Extra Roomy and Great Access

    Fly is awesome, actually practical. Longer pouch let's

    everything hang straight down, less pronounced bulge. I like the more reserved waistband art like previous models but not a deal breaker. Great briefs like the rest of the Krakatoa lineup!

  • David B.
    Verified Buyer
    Rated 5 out of 5 stars
    Comfort and Support with a Thoughtful Fit

    The Krakatoa Vesuvius Briefs deliver an excellent balance of comfort, support, and style. The fabric is soft and smooth against the skin, and the waistband is a standout—it doesn’t dig in, leave marks, or fold over throughout the day. I also appreciate the solid color variety, which gives some nice options beyond the basics.

    Fit-wise, these briefs do a great job. The full seat offers reliable coverage and stays in place, while the pouch provides comfortable support without being too tight or restrictive.

    The only downside for me is the hidden fly. While I usually prefer briefs without a fly, the hidden fly sometimes bunches up and lacks the clean, form-fitting appearance I like. That said, it’s likely a personal preference, and others may appreciate the added function.

    Overall, a high-quality, comfortable pair of briefs with thoughtful design—just one minor aesthetic quirk depending on your fly preference.

  • Antony A.
    Verified Buyer
    Rated 5 out of 5 stars
    Amazing support!!!!

    I just received these briefs today. I was very surprised by the material very comfortable brief amazig support for my privates. No rubbing up against my skin causing chafing. Will definitely make this my new underwear brand.

  • Mike B.
    Verified Buyer
    Rated 5 out of 5 stars
    Awesome!!

    Awesome brief! Finally a pair of underwear that really fit! Good amount of room in the pouch, seat and legs. Really comfortable and supportive. You have a new customer.