Black boxer briefs with a geometric patterned waistband on a white background.

Anti-Gravity Seamless Sports Boxer

Soapstone Green / Waist 38"-40" (L)
$49.00 CAD
$49.00 CAD $49.00 CAD
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Black boxer briefs with a geometric patterned waistband on a white background.
  • Black boxer briefs with a geometric patterned waistband on a white background.
  • Imperial Blue men's boxer brief featuring a contoured single layer Pouch with no fly, patterned waistband, seamless hems and a 5" inseam. Front Image.
  • White boxer briefs with text on the waistband against a white background
  • Lava Red men's boxer brief featuring a contoured single layer Pouch with no fly, patterned waistband, seamless hems and a 5" inseam. Front Image.
  • Black men's boxer brief featuring a contoured single layer Pouch with no fly, patterned waistband, seamless hems and a 5" inseam. Front Image.
  • Anti-Gravity Sports Boxer Back View
  • Red underwear with a yellow tennis ball inside, black waistband with white text.
  • Video of Anti-Gravity's Pouch
  • Video of Alex giving an overview of the Anti-Gravity Boxer Brief
Anti-Gravity Seamless Sports Boxer

Anti-Gravity Seamless Sports Boxer

4.8
Rated 4.8 out of 5 stars
158 Reviews
$49.00 CAD
$49.00 CAD $49.00 CAD
  • 5” Inseam
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
ColorSoapstone Green
Size
Fit
  • Midrise
  • Form-fitting
Specs & Features

5" Inseam

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

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:
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 158 reviews
Total 5 star reviews: 138 Total 4 star reviews: 12 Total 3 star reviews: 6 Total 2 star reviews: 1 Total 1 star reviews: 1
95%would recommend this product
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158 reviews
  • Terry M.
    Verified Buyer
    Rated 5 out of 5 stars
    KRAKATOA IS IT!

    I’ve been looking for a Saxx alternative for a while, and The material is weightless, the fit is perfect, and the pouch design blows the competition out of the water. I tested one pair through a few washes before buying a full drawer's worth. Best sports boxers I’ve owned—and my wife loves the look and feel, too.

    Highly recommend.

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  • Jerald S.
    Verified Buyer
    Rated 5 out of 5 stars
    Best underwear so far

    I have purchased God knows how many different types of underwear that claim to have a waistband that doesn’t roll. These underwear absolutely do not have a waste waistband that rolls. They’re comfortable, the sizing was perfect, I have had no issues with these underwear yet. I will definitely be buying more.

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  • Scott B.
    Verified Buyer
    Rated 5 out of 5 stars
    Best underwear on the planet!!!

    When they say no roll waist band, no rise leg openings, and the perfect pouch they mean it!!! I love these so much I now have 8 pairs. Won’t wear anything else!!!

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  • Karl S.
    Verified Buyer
    Rated 5 out of 5 stars
    Patagonia

    I wore these a few times and they were comfortable. But I went to Patagonia, Argentina for 10 days. I wore these every day while hiking with no chafing and complete comfort!!! Excellent fit and comfort!

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  • Steven H.
    Verified Buyer
    Rated 5 out of 5 stars
    I'm Wowed...Again!

    I've been wearing Krakatoa exclusively for about 4 years. It started with briefs (I wanted something comfortable for working out). Then moved on to Anti-Gravity Boxer Briefs - at the time, only the 7" length was available...I fell in love with them. I was ecstatic when the 5" sports boxers were introduced.

    Fast forward to a few months ago when the 5" Anti-Gravity seamless sports boxer came along. I took advantage of the bundle pricing and the holiday sale that was still going on and bought 10 pair.

    I love the feel of these. No seams showing through my pants legs. The material is the softest I've ever felt. It truly feels like wearing nothing at all.

    I've stopped counting how many pair of Krakatoa I have. I just know I'm running out of space in my dresser.

    GET THEE TO THE KRAKATOA STORE!

    PS...I wonder if I could talk Alex into buying me a bigger dresser LOL!

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  • DAN D.
    Verified Buyer
    Rated 5 out of 5 stars
    You’ll thank yourself for taking the chance!

    I am always skeptical when it comes to the dozens of ads I’ll see when scrolling social media. These caught my attention immediately when it came to the waist band. I hate how many times I’ve had to adjust myself and do that fun little dance when you’re readjusting the fold in that annoying waist band. It would fold over on me a few times an hour, even more when it’s an active day at work. I tried my first pair of these and that was the last of that problem for me. It gelt good to move in any direction. I could do lunges in these, and they still feel like I just put them on. No rolling up your leg, no pinching the goods, just breathable comfort and impeccable moisture defense. I ordered 5 more pair as soon as I could. Do not pass up the opportunity to be this comfortable in the midsection!

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  • Paul Q.
    Verified Buyer
    Rated 5 out of 5 stars
    Many shapes and sizes

    Im a heavyweight and super heavyweight over 18 years and retired 10. Im a big boy so my ass has to fit, im a big boy so my junk has to fit, its combat sports so the fabric has to move and stretch and waist needs to give support and not fold over. Ive tried over 10 brands in over 20 years. Im seen 2/4 a few times and 3/4 once. They are 4/4. Ill never use anything else again

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  • Orion W.
    Verified Buyer
    Rated 5 out of 5 stars
    These are the ones.

    I always felt like Goldilocks trying to find the perfect fitting underwear... but finally, these are the ones.

    5 reasons these will now be my only choice:

    #1. I am a shower, but I have teeny tiny little girl balls that sit high and tight, so I don't need a massive pouch for my member to flop around in or slip out of. And I certainly don't need a hot slab of meat stuck to my thigh. Krakatoa allows me to choose the pouch size: Fire.

    #2. Again, a shower, so it feels completely useless to wrestle my noodle through a fly. I prefer not to look like a jittery Quasimodo at the stall when I urgently need to use the restroom. It's just easier to pull out from the top. The fact that Krakatoa give you a choice on the fly: Amazeballs.

    #3. I have a long torso and short AF legs. Mount Everest has seen more growth than my inseam since Jr. High. Krakatoa lets you pick the leg length, so there's no more underwear hemline poking out of my shorts. Keeping my unmentionables unseen: dignifying.

    #4. Dad-bod? Nah, bro... gummy bear body, I'm skinny-fat with love handles. So, what's more annoying than your underwear waistband folding and digging into your sides like a sun baked fruit roll-up? Underwear that slip off and flash your crack-cleavage to unsuspecting, innocent bystanders. NOBODY WANTS THIS.

    Krakatoa waistbands withstand my poor lunch choices and support my afternoon belly bloat. FanFuckingTastic.

    #5 - They feel nice and breathable, I forget they're even on. It's like…

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  • Richard M.
    Verified Buyer
    Rated 5 out of 5 stars
    ⭐⭐⭐⭐⭐

    I've been trying different brands for a few years now without much success in finding a good fit. My search has ended with these.

    My twig size has always been average, but the berries are markedly bigger than average, and this has posed a problem in finding proper fitting underwear for my entire adult life.

    These fit me perfectly, are well made, comfortable, and nice in appearance. I'm sold. Thank you.

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  • Mark C.
    Verified Buyer
    Rated 5 out of 5 stars
    Best underwear I have ever purchased!

    I have tried so many brands of underwear looking for the right combination of quality, comfort, fit, support, sweat wicking and style. Finally I have found it all in your underwear. My anatomy gets the proper support and stays in place with comfort and I don’t need to constantly be adjusting myself. Other brands either leave me too loose or way too constricted. Finally yours gets it right! I tried a pair to sample it and now have to wait a week to wear it again, after my weekly wash cycle. So soon I will be purchasing multiple pairs to solve that problem. Thanks for the best design out there!

    Definitely ⭐️ ⭐️ ⭐️ ⭐️ ⭐️!!!

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