Black men's underwear with patterned waistband on a white background

Anti-Gravity Seamless Briefs

Soapstone Green / Waist 28"-30" (XS)
$43.00 CAD
$43.00 CAD $43.00 CAD
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Black men's underwear with patterned waistband on a white background
  • Black men's underwear with patterned waistband on a white background
  • White boxer briefs with text on a white background
  • Red men's underwear with a patterned waistband on a white background
  • Black men's underwear with patterned waistband on a white background
  • Blue men's underwear with a patterned waistband on a white background
  • Anti-Gravity Brief Back View
  • Close up of the 40% narrower leg openings on the pinatubo briefs.
  • Anti-Gravity Briefs overview video
Anti-Gravity Seamless Briefs

Anti-Gravity Seamless Briefs

4.8
Rated 4.8 out of 5 stars
59 Reviews
$43.00 CAD
$43.00 CAD $43.00 CAD
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
ColorSoapstone Green
Size
3-Pack
$90.00 $76.50
Save $13.50
5-Pack
$150.00 $120.00
Save $30.00
7-Pack
$210.00 $157.50
Save $52.50

Savings are calculated for the current product being viewed.

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.
Mix match and save 3+ is 15%, 5+ is 20%, 7+ is 25%
Fit
  • Midrise
  • Form-fitting
First Fit Guarantee

1st Fit Guarantee

We want you to find the perfect fit.

Try on a single pair of underwear and make sure it's perfect for you.

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

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.

WHAT SETS US APART

Every little detail was obsessively fine-tuned, to deliver you an underwear experience like no other:
Close-up of a blue fabric texture

FULL SUPPORT POUCH
All the Support, None of the Fuss.

Say goodbye to readjustments! Our large, 3" deep front pouch is engineered to separate you from your thighs and keep you comfortably supported all day.
No gimmicks, no side panels, no holes to go through every time you go to the bathroom.
It just works.

No fly? No problem! Just pull the waistband down and do your business.
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.
4.8
Rated 4.8 out of 5 stars
Based on 59 reviews
Total 5 star reviews: 49 Total 4 star reviews: 6 Total 3 star reviews: 4 Total 2 star reviews: 0 Total 1 star reviews: 0
93%would recommend this product
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59 reviews
  • Gregory S.
    Verified Buyer
    Rated 5 out of 5 stars
    Unquestionably the best. 🙌🏼

    I’m middle-aged, warm-blooded, and hairy. Underwear comfort, quality, fit, durability, and swagger-factor are critical. A friend borrowed me one of his pairs. PUMP, Under Armor, etc. all sit in a solid second place now. Excited to convert my underwear drawer to the K.

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  • John H.
    Verified Buyer
    Rated 5 out of 5 stars
    Best underwater in the world.

    Look no further, pull out your credit card and order. Your boys will thank you

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  • Philip R.
    Verified Buyer
    Rated 5 out of 5 stars
    Things I didn't know I had strong opinions about until now...

    I never planned to become someone who writes passionately about underwear. And yet here we are. These briefs have somehow turned me into a person who thinks, “You know what? Engineering matters.” Putting them on the first time felt less like getting dressed and more like my body auto-installed an update.

    Version 2.0: Reduced Chafing. Improved Stability. Minor miracles added. They slide on without that awkward shimmy dance where you question your life choices. No seams, no thick waistband, no weird bunching that makes you walk like you’re smuggling a folded napkin. Just smooth. Quiet. Cooperative.

    The best way I can describe them is this: They mind their own business. All day. No tugging. No adjusting.

    No stealth bathroom “reset.” No moments where you suddenly become aware of your underwear like it just filed a complaint.

    I wore them through: a long workday, errands, sitting in the car too long, one aggressively ambitious grocery haul, And not once did I think about them. Which, frankly, is the gold medal of underwear performance.

    The “anti-gravity” name sounds dramatic, but honestly it fits. Everything stays where it should. There’s support without squeeze, structure without bulk. It’s like the difference between being hugged and being tackled. Also — and this is crucial — they don’t show lines. At all. I put on slimmer pants and didn’t look like I had mapped my undergarments with a highlighter. Victory.

    Laundry test? Passed. Stretch test? Passed. “Did I accidentally put…

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  • Davis W.
    Verified Buyer
    Rated 4 out of 5 stars
    Solid Quality

    This is my first time trying the Anti-Gravity brief. Like all Krakatoa products it’s well-designed, beautifully constructed and made from higher quality fabric and elastic than most underwear. Make sure to consult the size chart. Mine were just as advertised but I also ordered a pair one size larger. Anti-Gravity pouch is comfortable but I’ll always prefer the models with the lined pouch instead.

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  • Bruce D.
    Verified Buyer
    Rated 5 out of 5 stars
    Superb Sensual Fit

    Not only is this a great looking product but it is so smooth and totally sensual that it will amazingly heighten the pleasure of being a man. I totally adore Krakatoa.

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  • Vincent B.
    Verified Buyer
    Rated 5 out of 5 stars
    Sleek, Supportive, and Comfortable!

    The new Krakatoa Anti-Gravity Seamless Briefs are fantastic. With less coverage than the trunks, they offer a sleek, modern look while still delivering all-day comfort. The seamless design feels smooth against the skin, and the fit is true to size—supportive without being restrictive. They look great, feel great, and provide the perfect balance of style and function. Definitely a must-have addition to the drawer!

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  • James P.
    Verified Buyer
    Rated 5 out of 5 stars
    It hugs in all the right ways

    Love the colors and how it contours without restricting

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  • Daryl Z.
    Verified Buyer
    Rated 5 out of 5 stars
    High quality comfortable briefs

    After doing a google search I stumbled upon Krakatoa website. I liked the look of the Anit-gravity seamless briefs and fell in love with the green color. I ordered the special first order 1 pair deal. Met my expectations for what I was hoping for. Breathable and super comfortable. Green is my favorite color so I came back and ordered 8 more of the green color same style. I am very happy with my new briefs!

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  • Edward S. W.
    Verified Buyer
    Rated 5 out of 5 stars
    Very comfy briefs with great support

    I ordered one pair to test them out. They arrived on time and were very comfy and supportive. I immediately ordered a few more and got rid of some bulky no support boxers. The Krakatoas are now in the daily rotation and I’ll see how they stand up over time. I fully expect that they will by the feel of the fabric. I’ll probably order some more in a bit and replace some other under performing briefs and boxers.

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  • Chris G.
    Verified Buyer
    Rated 5 out of 5 stars
    Great product

    Excellent fit and really like how they feel. I can wear them all day doesn't feel like I have anything on

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