Skip to product information
1 of 14

Krakatoa Underwear

Pinatubo Briefs

Pinatubo Briefs

4.9
Rated 4.9 out of 5 stars
145 Reviews
Regular price $ 26.00 USD
Regular price $ 22.00 USD Sale price $ 26.00 USD
Sale Sold out
Size Guide
Size
Color

Save 10% when you buy 3+

Save 20% when you buy 7+

95% MicroModal, Stay Flat Waistband, Deep Pouch

📦 Orders ship within 1-2 business days

  • FREE SHIPPING ON ORDERS OVER $75+
  • 1ST ORDER FIT GUARANTEE
  • 52 WASH GUARANTEE
View full details

PINATUBO BRIEFS

The Pinatubo Brief with a horizontal fly, with an extra roomy pouch, is the Brief you were looking for.

An extra-deep front pouch with a super slick horizontal fly, that was engineered for easy access and excellent comfort, will keep you supported without fuss.

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

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

40% less material between the legs.

52 Wash Guarantee. Because we can.

Find your size

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

WHO ARE PINATUBO BRIEFS PERFECT FOR?

The Pinatubo Briefs with a fly are perfect for active guys that prefer as little material between their legs as possible, and need easy access to the goods.
A supportive extra-large front pouch with 40% less material between the legs make for some of the best fitting Briefs on the market.

Need a little more leg coverage? Check our our Boxer Briefs with with 7" inseam, and our Trunks which have a 2" & 1.5" inseams for more choice. Whether you're working out or going for a night out, these Briefs are so comfortable you'll forget you're wearing them.

WHAT MAKES THEM KRAKATOA?

  • 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 then blend the MicroModal with 5% Spandex to allow for it to move with you.
  • Enjoy more room with a large front pouch that provides space and support for your cargo, with complete separation from your thighs. No need to adjust anymore.
  • Feel comfortable all day with a waistband that doesn't flip or fold.
  • And keep them longer with the peace of mind of our 52 Wash Guarantee.

WHAT'S GREAT FOR THE WEARER?

The Pinatubo Briefs with a fly are specifically designed for maximum comfort and accessibility. They work well for a variety of activities, from working out to lounging around, they can take on anything you throw at them. Once you make the decision to embrace this everyday luxury for your privates, getting dressed in the morning will never be the same again.

Great for: Walking, Hiking, Lifting, Exercising, Yoga, Lounging.

HEY ALEX, I HAVE QUESTIONS!

What should I know about the fit?

The Anti-Gravity Brief does not have an inseam and the fabric between the legs is 40% narrower for an all day comfortable feel that won't bunch up. The pouch is designed to be large enough to provide you room, while being double layered to also provide support and privacy for your privates. All of this is benefited by our use of MicroModal which is incredibly lightweight and breathable.

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?

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

If something doesn't fit right on your regular priced Krakatoa, let us know and we will make it right.

Try on a pair and make sure it's perfect in you. If it doesn't work for you, your first regular priced pair is covered.

After this first pair, all underwear must be unworn, unwashed, in the original condition and packaging that you received them for a refund.
If you bought multiple pairs, make sure you try ONLY ONE PAIR for fitting before you decide to use the rest.

INTRO PAIRS ARE FINAL SALE AND NOT RETURNABLE.

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've built a tough product with reinforced stitching that lays flat and the very best materials we could get our hands on.

That said, you should follow the care instructions.

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 before 52 washes or 12 months, we'll replace them for free.

  • A FABRIC TO OVERLOAD THE SENSES

    Your skin never felt a fabric so soft and welcoming before. Three times softer than cotton, our high-grade, environmentally-conscious MicroModal fabric will make you rethink cotton and synthetics forever.

  • A POUCH FOR ALL OF US

    Large, round, and deep support, without uncomfortable lift. Naturally odor resistant, it separates and cradles you, so you won't need to adjust anymore. Its double-panel construction keeps your privates more private.

  • A WAISTBAND THAT IS PURE LUXURY

    Smooth and soft to the touch, the unflippable waistband won't mark your skin and keep you comfortable all day. To complement the art outside the waistband, its interior has positive affirmations to get you going at every break.

4.9
Rated 4.9 out of 5 stars
Based on 145 reviews
Total 5 star reviews: 134 Total 4 star reviews: 6 Total 3 star reviews: 4 Total 2 star reviews: 1 Total 1 star reviews: 0
91%would recommend this product
Customer-uploaded media carousel. Press left and right arrows to navigate. Press space or enter to open more details.
Slide 1 selected
145 reviews
  • Ralph G.
    Verified Buyer
    4 hours ago
    Rated 5 out of 5 stars
    The best

    The best i've worn.

  • Will W.
    Verified Buyer
    7 hours ago
    Rated 5 out of 5 stars
    New Alpine White Briefs

    I was in love with the very first pair of Krakatoa Underwear, especially the non-liner Pinatubo Briefs. So when Alex introduced the new Alpine White, I just had to order a pair. Now, I'm coming back for more!!! These are the most comfortable, luxurious, appealing you can buy. Fit like a dream and sexy as hell. You just have to order these briefs right away.

  • Brian R.
    Verified Buyer
    8 hours ago
    Rated 5 out of 5 stars
    Honest Review

    Bought Pinatubo Briefs in 4 different colors. (6 pairs total, 3 of different colors, 3 of the white pair. I went with size small, as I'm 5'5 and 150lbs, fairly slim to average build).

    TL;DR - Incredible underwear, definitely worth your time and money to look into.

    I got an ad for Krakatoa on Facebook, and decided to click it, as it showed an unusual design for underwear, though one I've seen and tried before. My main draw here was the horizontal fly. I've tried other brands before that had the horizontal fly, and it's what made me a convert to this style. However, with many other brands, they do a fairly poor job of designing around what I think men want in their underwear: Comfort for the jewels, doesn't leave you feeling moist and sticky, and lets face it, we wanna look good in them for when it matters.

    This is where Krakatoa has fit the bill for me. They leave enough pouch room for your delicate areas to be comfortable, not squished, and they have freedom to rearrange themselves as needed for natural comfort, but for me, the briefs also have kept them in the general area I need them to stay. I'm more around the average size guy here, and find that these (is Size Small), have only exactly as much room as the average guy would need available in the pouch. This could use just a bit more room for the boys to hang, especially for those gentlemen out there that have above average blessings, but overall the comfort is pretty top tier here.

    The design of the…

  • Antonio R.
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    Truly amazing

    Some of the best underwear I’ve tried. And I’ve tried a lot of different brands and styles. Love the cut of the briefs, soft, stretchy fabric, large pouch, and proper sizing. Wish I would’ve got the new white color before i bought the others but love the color options as well. Critiques: good sized front pouch with good stretch but having some pouch size options may be helpful as I could use a slightly larger pouch. Color options are good but wish there was a bit more variation- lot of darker colors. Cut around the butt is good but would like a but more of a higher cut to the leg with a bit more showing in the rear- maybe a sculpted front and rear band as well (without ordering a straight thong). These are a must buy!

  • Riley D.
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    The best ever

    Probably the best out there. There are all these little details that are just right. An enormous amount of effort went into the design and it shows.

  • Travis W.
    Verified Buyer
    5 days ago
    Rated 5 out of 5 stars
    New favorites!

    I absolutely love these briefs. They’re so comfortable with great fit and fabric.

  • Randy
    5 days ago
    Rated 5 out of 5 stars
    5 Stars

    The best briefs on the planet maybe. Size down. Just suck it up and buy the entire week supply now.

  • Jarred B.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Loved the purchase

    Fit great, feel great, look great.

  • Michael
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Luxurious

    Best feeling material ever and they stay in place while squatting. Have to try them running this summer.

  • John N.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Great underwear!

    Super comfortable and not at all constricting.

Reviews LoadedReviews Added