Red boxer briefs with a patterned waistband on a white background

Pinatubo Boxer Briefs - 5"

Lava Red / Waist 28"-30" (XS)
$ 34.00 USD
Sale price  $ 34.00 USD Regular price  $ 34.00 USD
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Red boxer briefs with a patterned waistband on a white background

Pinatubo Boxer Briefs - 5"

4.8
Rated 4.8 out of 5 stars
608 Reviews
$ 34.00 USD
Sale price  $ 34.00 USD Regular price  $ 34.00 USD
BUY MORE SAVE MORE SAVE UP TO 28%
Offer Per Unit
Single Unit $ 34.00 / ea
Buy 3, Get 1 FREE SAVE 25% $ 25.50 / ea
Buy 5, Get 2 FREE BEST VALUE $ 24.29 / ea
  • 5” Inseam
  • Horizontal Fly
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Color Lava Red
Size

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Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Free Ground Shipping on Orders over $150

We do our best to process orders within 1-2 business days. Please keep in mind that over busy times this might take longer.

Fit
  • Midrise
  • Form-fitting
First Fit Guarantee

1st Fit Guarantee

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

If you bought multiple pairs, make sure you try ONLY ONE PAIR for fitting purposes.

NOT ONE PER STYLE OR LINE.

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.

1 Year Warranty

1 Year Warranty

We want you to feel confident making your purchase from us. We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, 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 "1 Year Warranty Claim". Please be sure to include photos of the damage for our records.

We will be in touch shortly after.

Full details can be found HERE.

Specs & Features

5" Inseam

Mid-length inseam that works well under running shorts and great for guys less than 5'10" or shorter 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

Returns and Exchanges

Returns & Exchanges

We except returns on all unopened and sealed products within 60 days from purchase.

ALL INTRO PAIR ORDERS ARE FINAL. NO RETURNS OR EXCHANGES.

OUR PROMISE TO YOU

Krakatoa First Pair Guarantee

Wrong fit on your first pair?
No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

CUSTOMER FEEDBACK

What Customers Love Most

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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 use.

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
The Art of Comfort

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.

4.8
Rated 4.8 out of 5 stars
Based on 608 reviews
96%would recommend this product
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608 reviews
  • Jay R.
    Verified Buyer
    Rated 5 out of 5 stars
    So comfortable

    These are my favorite color and style of underwear wear . Will never wear another .

  • Michael D.
    Verified Buyer
    Rated 5 out of 5 stars
    No roll waistband and amazing comfort!

    I love these underwear!! They are incredibly soft and comfortable and not binding even though I've put on a few pounds since I started wearing them. But, the greatest thing about these underwear is that the waistband does not roll over AND it's still comfortable, my stomach roll doesn't roll it down. This was what I was looking for! I just ordered 4 more pair. I can't wait until my whole underwear drawer is filled with Pinatubo from Krakatowa. Thanks for creating an amazingly comfortable garment.

  • Kurt R.
    Verified Buyer
    Rated 5 out of 5 stars
    I Love Pinatubo Style!

    With all of the Krakatoa underwear that I have bought, I’ve learned that Pinatubo is the best style for me! Absolutely LOVE every Pinatubo model I have purchased! From the trunks, to the thongs and the others in between, Pinatubo are the BEST! The comfort of the material is so soft! The size of the pouch is perfect for me! The horizontal fly is the easiest access when needed! I have exclusively changed my underwear drawer to Krakatoa!!! Nothing else compares to these underwear, NOTHING!

    Thanks for creating such a wonderful product!

  • Dan M.
    Verified Buyer
    Rated 5 out of 5 stars
    Best underwear in my 60+ years on this planet!

    The fabric is amazing. It is soft, movable and breathable the fit once I asked for help with your sizes you helped me out right away and it is probably one of the best fits I’ve ever had now for the features. The ball pouch works like no other and believe me I have the ones with the flaps. I have the ones with other features. Nothing works like this. I am very glad I got these. They are in heavy rotation and as soon as I can afford some more. I will get some more thanks!

  • Corey B.
    Verified Buyer
    Rated 5 out of 5 stars
    Luxurious comfort... superb support!

    I can't rave enough about these Pinatubo seamless sports boxers! I've been pretty dedicated to either Under Armour or Tommy Johns for several years, but got so frustrated at how the sizes never stayed consistent, nor the same fit. But these (3rd ordered now...) have the best balance of comfort & support I've ever worn! The material is luxurious and sexy - maybe little too much, as I'm aroused a bit every time I think about how perfect the boys are nestled in place. The fly is THE perfect design for many reasons 😉

    Keep up the good work guys!

  • JESUS G.
    Verified Buyer
    What is your height? 5' 11"
    What is your body type? Built
    What is your height? 5' 11"
    What is your body type? Built
    Rated 5 out of 5 stars
    Most Comfortable Underwear I Have Ever Owned

    Krakatoa delivers on all of their promises. The fabric is soft and comfortable, the waistband does not fold under my tummy, the pouch is comfortable, supportive, and attractive, the colors are beautiful, and the length is perfect. The price is a little bit steep BUT worth every penny. I bought one pair as a test and immediately bought ten more after wearing them. I have already told others about them. 5/5, highly recommend.

  • James B.
    Verified Buyer
    What is your height? 6' 2"
    What is your body type? Built
    What is your height? 6' 2"
    What is your body type? Built
    Rated 5 out of 5 stars
    Be gone tighty whities!

    Approaching 75 years old, I had never won boxer briefs before. I went into my big and tall store to be fitted for new clothes after having lost considerable weight to avoid chronic heath issues. The store used FiTMAP technology to scan my body, but first asked me to change into boxer briefs. I did and all my new clothes were a perfect fit. Those boxer briefs were not Krakatoa. I later saw your ads on Facebook, tried some, and loved them all in so many ways. The inside waistband inspirational words tickled my fancy as well! I've thrown out all my old tighty whities, and replaced them with two weeks' worth of Pinatubos.

  • JACOBO H.
    Verified Buyer
    Rated 5 out of 5 stars
    So good!

    I was instatntly obsessed with Krakatoa from the first time I tried them on, so much so I ordered another 6 immediately. It was a you don’t know what you don’t know kind of moment. They’re soft, comfortable, supportive the seams are spot on, the flys are good no matter which one you get. I have spent a long time stocking my underwear drawer with Tommy John’s, but the value proposition there was definitely faded. Unfortunately for them, they’re reminding me of the old Ditech commercials. “Lost another one to Krakatoa”

    Only ask, is if there was a slightly shorter option for the boxer briefs, other than that, I’ll be back for more soon!

  • Jim B.
    Verified Buyer
    Rated 5 out of 5 stars
    Super comfortable and they hold up well

    My oldest pair of Krakatoa is at least 4 or 5 years old and they don't look much different than the newest pairs that I bought a couple of weeks ago. The waist band looks and feels great on my oldest to newest. The material doesn't have any odd thin spots or wear. The legs are still nice and tight.

    I have owned underwear from all of the major athletic brands, expensive brands that base their marketing around traveling, and several different versions of the separating boxer briefs that have great marketing. I do a ton of summer hiking and winter mountaineering, I lift weights several days a week, and I do some traveling around the world. I have never found boxer briefs that could do all three with ease until Krakatoa. I put them on and forget about them. They don't ride up my legs, the waistband doesn't roll or flip, the pouch area is excellent for allowing things to have some space without constricting, and they don't hold moisture at all. I can climb a mountain all day without any odd friction or needing to reposition anything. I can do deep squats without the legs getting stretched out or stuck higher up on my thigh. These really do perform as advertised and are incredibly comfortable.

    The length is tricky for me and I have purchased several different variations trying to find what I like best. I wear a size M and own 7", 5", and trunks Pinatubo style. The trunks are a definite no for me because of the shape of my leg. The 5" are great when I am wearing shorts because…

  • Roy M.
    Verified Buyer
    Rated 5 out of 5 stars
    All-Around Winners

    These boxer briefs were everything I'd hoped for and more: soft and luxurious, so comfortable they felt almost nonexistent, reasonably priced, and nice-looking as well. For years I've been on an informal quest to find, if not the ultimate underwear, then at least some that I can reach for with confidence when I open my underwear drawer (my drawers drawer?). I'll try almost any new brand I run across, unless it's outrageously priced. The best ones I buy again and again, until another brand catches my attention. These boxer briefs - my style of choice these days - are a worthy addition to my collection.