Pinatubo seamless front view in soapstone green

Pinatubo Seamless Boxer Briefs

Soapstone Green / Waist 31"-33" (S)
$52.00 CAD
Sale price  $52.00 CAD Regular price  $52.00 CAD
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Pinatubo seamless front view in soapstone green

Pinatubo Seamless Boxer Briefs

4.9
Rated 4.9 out of 5 stars
453 Reviews
$52.00 CAD
Sale price  $52.00 CAD Regular price  $52.00 CAD
  • 7” Inseam
  • Horizontal Fly
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
ColorSoapstone Green
Size
Fit
  • Midrise
  • Form-fitting
Specs & Features

7" Inseam

Longer inseam that works well under pants and great for guys taller than 5'10" or longer legs.

Horizontal Fly

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

3" Deep Pouch

3" 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:

Up close of Pinatubo underwear Fly in purple.

FULL SUPPORT WITH A FLY
Putting the Fun in Functional

Pinatubo’s 3” deep pouch design with minimal stitching keeps you comfortable and secure all day.
The one-handed, top-access horizontal fly provides effortless reach into the goods.
The low-stitching 3" pouch is ultra-smooth, without holes, panels or gimmicks.
It just works.
It separates you from your thighs, ensuring comfortable support through all of life’s adventures.

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 453 reviews
Total 5 star reviews: 416 Total 4 star reviews: 22 Total 3 star reviews: 7 Total 2 star reviews: 6 Total 1 star reviews: 2
97%would recommend this product
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453 reviews
  • Matt P.
    Verified Buyer
    Rated 5 out of 5 stars
    Better than I expected!

    To be honest, I had close yo zero confidence that these underwear were going to be any different than all the other brands that made the sane claims. I must say that I'm shocked! The legs don't ride up my thighs. I've hiked over 50 miles in a pair, and no chafing. The waistband does not fold over because of my gut. I have no idea how you did it. I dare you to improve it!!! I don't think you can.

  • Moises G.
    Verified Buyer
    Rated 5 out of 5 stars
    Keep coming back for more

    Super soft and comfortable.

    The waistband has not folded over one bit.

    From GROWer to SHOWer instantly. (you’ll want to wear sweatpants from here on out)

    Wore them a few days in a row and they did not smell. Yes I was shocked!

    The horizontal fly is the best- easy access for what ever may happen!

    I just bought four more pairs so I can finally get rid of my old polyester boxer briefs.

    Krakatoa knows what they are doing! Just give them a try and you’ll feel for yourself.

  • John
    Verified Reviewer
    Rated 5 out of 5 stars
    Backpacking and River Plunge Approved

    After wearing them a few times I decided to take them on a 3 day, 2 night backpacking trip. I did some cold plunging in the river with them and just let them air dry for a bit before throwing my pants back on over top of them.

    I was super impressed with how well they dried off and how comfortable they were for the extended timeframe of use. Will be buying several more pairs.

  • Trey S.
    Verified Reviewer
    Rated 5 out of 5 stars
    Great for guys who aren't packing much!!

    They feel comfortable and the legs don't seem to ride up very much. I'm very happy with the support it offers and it cradles everything. Even if you have a small penis these underwear make it look great unlike other pairs on here. 10/10

  • Brendan M.
    Verified Buyer
    Rated 5 out of 5 stars
    Comparison/review

    I’m an active guy and work as a mechanic at a power plant so I needed something that fit that life style. After looking for 7” inseam underwear that won’t ride up and that stay in place, I landed on the 7” inseam lulu lemon all in motion. While waiting on them to arrive I decided to try the Krakatoa pinatubo as well and compare them. They both arrived the same day. I tried the lulu lemon on the first day and I was impressed. They seam to stay put and they were very comfortable. In fact had I not tried the Krakatoa pinatubo I would have stopped there. Day 2 I tried the Krakatoa and instantly realized I as glad that I decided to compare these 2. There is a significant difference between them and the lulu’s. First the ball sack and junk cradle is instantly noticeable and comfortable. The lulus weren’t uncomfortable but with the Krakatoas there was no sack sticking to your legs, no feeling like your sack is smashed to your body. It’s like your sack has its own area that is simply more comfortable than anything I’ve ever felt. 0 ball adjusting through the day. Next the quality of material is noticeable not by large margins but it is noticeable. Next the waist band is soft and comfortable but also rigid, if that makes sense. Like it doesn’t fold on you. Lastly, this one shocked me. I didn’t really think a horizontal fly would be life changing, boy was I wrong. Why at 42 years old am I just now finding out that a horizontal fly feels so easy and so nice? I will be buying more…

  • Robert A.
    Verified Buyer
    Rated 5 out of 5 stars
    All awesome so far

    I was looking for underwear with horizontal fly, soft material, waistband that did not roll. Found the requirements met with the Pinatubo boxer briefs. Love em. I hopefully will update after a few washes for how they hold up after several laundry cycles. Thank you Alex and team for providing an awesome manly product.

    Cheers,

    Bob

  • Henry V.
    Verified Buyer
    Rated 5 out of 5 stars
    The best boxer briefs I've found

    I'm an old guy (69 at the time I wrote this) and have been wearing boxer briefs for decades. I used to just buy whatever was available at the local stores, and those were okay. Not great, since they were often tight in the groin. (Seriously, who designed those? What man wants a groin that's tight, and likely to get tighter with laundry shrinkage.) I discovered more thoughtfully designed boxer briefs through online retailers like Bombas and others whose names have faded from memory. I was about to order a new set of boxer briefs from Bombas when I stumbled across a Krakatoa ad online. (Facebook finally being useful, for once.) I checked out the site and liked the option to order a single test pair. Great idea, guys!

    I ordered the test pair (obviously), even though I was initially skeptical of the horizontal fly. First, the horizontal fly is genius. I don't know if that's a Krakatoa original or not, but I love it. It's far easier to use than the traditional fly, including being less constricting. (When you get to my age, it doesn't take much to cut off the flow.) The material is extraordinarily soft, as advertise, and the briefs fit well. One design element that helped convince me to place an order was the claim that the waistband wouldn't fold over, like it does in other briefs. I hate that. And the box briefs deliver on that promise. I immediately ordered 7 more pairs.

    If you like boxer briefs, give this pair a try. They're the best I've ever worn.

  • Rodolfo S.
    Verified Buyer
    Rated 5 out of 5 stars
    Probably the best I’ve ever had

    I’ve had a lot of different pair of underwear and as I traveled the world of boxer briefs I’ve had some winners and duds. More duds than I’d care to admit. The Krakatoa line of underwear has been a true standout. I’ve had other modal cotton but these have been the most comfort for all my parts. The hand feel and wear feel are phenomenal. The legs never have ride up issues and I feel well contained when moving or active. I’ve regretted some other purchases but I will never regret these. The only regret is that I didn’t find them sooner.

  • Mark H.
    Verified Buyer
    Rated 5 out of 5 stars
    Exceptional product and company

    Amazing product. Everything about the underwear has been designed with a reason. Fit is spot on. Materials are top notch. I was able to call and speak with Alex who helped guide me on finding the perfect pair for my needs. I am not being compensated for this review. I just feel strongly enough about the product and company that I felt the need to post a positive review.

  • Douglas S.
    Verified Buyer
    Rated 5 out of 5 stars
    Confidence booster

    My wife refused to make eye contact because she "made her choice." These undies boosted my confidence immediately, and I have not needed to rearrange anything at all throughout the day.