Skip to product information
1 of 11

Haleakala Trunks

Haleakala Trunks

4.9
Rated 4.9 out of 5 stars
357 Reviews
Regular price $ 34.00 USD
Regular price $ 28.00 USD Sale price $ 34.00 USD
Sale Sold out

4" Deep StratoPouch, Seamless Hems, 1.5" inseam, 95% MicroModal

Size Guide
Size
Color

Save With Bundle Pricing

Save 10% when you buy 3+ pairs.
Save 20% when you buy 7+ pairs.

Mix and match items to unlock savings.
Savings automatically added to your cart.

📦 Orders ship within 1-2 business days

The Details

The Trunk, perfected.

Sporting the new StratoPouch, an extra-large 4" front pouch with a breathable liner, the Haleakala Trunks are the sportiest Trunk of the line up.

With a shorter inseam and ultra-low profile seamless hems, they contour around your crotch and move with you without bunching up, perfect for strenuous exercise without restrictions.

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.

Legs that don't roll up or bunch up.

Inseam: 1.5 inch

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 support@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 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.

Free US Shipping on Orders $75+

We provide free basic shipping for all orders over $75 in the United States.

View full details

I'm Alex, I made these for you.

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: 

Up close image of the breathable liner inside the pouch of the Haleakala line.

THE STRATOPOUCH
Deep and Roomy

Say goodbye to readjustments.
The large StratoPouch, a 4" deep front pouch with a breathable and antimicrobial liner, is engineered to separate you from your thighs and keep you comfortably dry and supported. Perfect for sports, and hot and humid days. 

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.

Haleakala seamless hems up close

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 Haleakala.

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!

What's StratoPouch?

Men come in all different shapes and sizes but for years underwear failed to respect our anatomy.
The StratoPouch is expertly crafted to provide optimal support and breathability for most men. Designed with a deeper, narrower shape and increased volume, it offers a perfect balance of separation and comfort.
Say goodbye to constant adjustments—sticking to your leg is now a thing of the past. The new internal liner is a game-changer: perforated for breathability, anti-microbial for odor resistance, and incredibly smooth to prevent any sticking, even during those happy moments.
Because it was time someone did it right for us guys.

What's the composition of the liner?

The liner inside the StratoPouch is made of 63.3% Viscose, 27.7% Polyester, 4% Nylon and 5% Spandex.

What should I know about the fit?

The Haleakala Trunk is designed with a shorter 1.5" inseam. The seamless legs are designed to stay put. The larger pouch is designed to be large enough to provide you room, while being lined for greater breathability and 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?

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 TRUNK 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:

  • Blue Haleakala side view with closed pouch

    Sealed, Lined StratoPouch
    4" Sealed Pouch
    Seamless Hems
    1.5" Inseam

    Learn More 
  • Vesuvius side view with pouch showing lower pouch with horizontal fly.

    U-Shaped Caldera Pouch
    Low-Profile StealthFly
    Seamless Hems
    1.5" Inseam

    Learn More 
  • Red Anti-gravity side view with closed pouch

    The Original
    3" Sealed Pouch
    Stitched Hems
    2" Inseam

    Learn More 
  • Pinatubo side view with pouch showing lower pouch with horizontal fly.

    3" Low-Seam Pouch
    Top Horizontal Fly
    Stitched Hems
    2" Inseam

    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 357 reviews
Total 5 star reviews: 331 Total 4 star reviews: 21 Total 3 star reviews: 3 Total 2 star reviews: 1 Total 1 star reviews: 1
90%would recommend these products
Slide 1 selected
357 reviews
  • Daniel D.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Very satisfied

    I can’t even discribe the experience of needing not just wanting …. new underwear because of loosing everything due to fire !!! I Decided to give Krakatoa a try and wow customer service was amazing in answering a few questions I had very promptly and offer advise on the best ones to buy … and I love the feel of the material, support and ample pouch something I find hard to find !!! And the socks wow so comfortable !!! Thank u will sure be ordering more a 5 star experience!

  • Kendall L.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Can’t get enough ❤️❤️❤️

    Absolutely love the whole brand. Incredibly soft and so comfy. Keep up the great work!

  • ED S.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Great

    Fits great. Snug fit. Supportive but not restraining. Very comfortable.

  • Robert S.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Over 200 miles on the John Muir Trail!!

    If you're looking for the perfect combination of comfort and durability for a long-distance hike, the Krakatoa Haleakala Trunks deserve serious consideration. I wore these trunks for the entirety of my 211-mile John Muir Trail hike, and they exceeded my expectations in several key areas.

    Comfort:

    The first thing that stood out was how comfortable these trunks were, even after long days on the trail. The soft, lightweight fabric felt great against my skin, preventing chafing—a major plus when you're trekking for hours on end with a loaded pack. The fit was secure without being restrictive. Even during the hottest parts of the day, the breathability of the fabric kept me cool, and the material wicked away sweat effectively, ensuring I stayed dry.

    Endurance:

    Equally impressive was the durability of the Haleakala Trunks. Over the course of 211 miles, through rough terrain, stream crossings, and varying weather conditions, the trunks held up incredibly well. They showed no signs of wear, even after repeated exposure to the elements. The reinforced stitching and quality of materials ensured that they didn’t tear or degrade, and their quick-drying properties were a lifesaver when encountering streams or sweat. I never had to worry about them slowing me down.

    Final Thoughts:

    The Krakatoa Haleakala Trunks are the perfect companion for long-distance hikes like the John Muir Trail. They provide excellent comfort during long days, and their endurance against the elements is…

  • Luca
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    One of the best trunks

    Great support and very comfortable! I forget that I’m wearing them!

  • Sailor R.
    Verified Reviewer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Perfect fit and support

    I appreciate the short inseam and the comfort these briefs give. The support of the testicles and the fit is very much appreciated.

  • Grant P.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Finally

    I cannot express how excited I am to have found an underwear that actually have a front pouch that can accommodate my size. Highly recommended if your are a well endowed man. I bought one pair and went back and bought four more immediately after trying on the first.

  • Greg R.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Comfort and room.

    Love the comfort and room. Feels like I’m wearing nothing but not falling around.

  • Loris Z.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    Smooth as silk

    Very comfy, holds the boys well, and is smooth as silk. I’m 5’8”, 165, 30 waist, and the mediums are not too tight nor loose. I got a small in another style (black Pinatubo’s) and they’re tighter but still comfy. So if you’re my size, it’s really just a preference as to how you like them to fit. I prefer the Pinatubo’s for the horizontal fly but the bigger pouch on the Haleakala’s adds additional space for my XL package. I kinda like the green better than the black cause it shows my pouch better — I feel more virile. Both have the affirming words on the inseam which is awesome.

  • Chad C.
    Verified Buyer
    Reviewing
    Haleakala Trunks
    Rated 5 out of 5 stars
    New favorites.

    I’m 6’2” and 170lbs I wear a size 33 waist pant. I ordered a size small and the fit is perfect. Here is my review after wearing for a couple weeks. The material is so soft you could easily forget you were wearing anything. The package support is top notch and very flattering. The wider waistband is nice and definitely prevents it from rolling when you bend over. My only complaint is there aren’t more colors to pick from. All in all I’m switching over from the previous “pouch” trunks I used to use to these.