Skip to product information
1 of 16

Krakatoa Underwear

Anti-Gravity Trunks

Anti-Gravity Trunks

4.9
Rated 4.9 out of 5 stars
1,126 Reviews
Regular price $ 30.00 USD
Regular price $ 25.00 USD Sale price $ 30.00 USD
Sale Sold out
Size Guide
Size
Color

Save 10% when you buy 3+

Save 20% when you buy 7+

2" inseam, 95% MicroModal, Stay Flat Waistband

📦 Orders ship within 1-2 business days

  • FREE SHIPPING ON ORDERS OVER $75+
  • 1ST ORDER FIT GUARANTEE
  • 52 WASH GUARANTEE
View full details

ANTI-GRAVITY TRUNKS

The Original Trunk that Started it All.

Large, 3" deep front pouch engineered to separate you from your thighs and keep you comfortably supported.

Form-fitting ultra-premium 95% MicroModal fabric holds you softly and leaves you feeling 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: 2 inches

52 Wash Guarantee. Because we can.

Find your size

You'll need a a pair of your existing underwear, a flat surface, and a measuring tape.

WHO ARE KRAKATOA TRUNKS PERFECT FOR?

The Anti-Gravity Trunks are perfect for active guys that prefer a little less leg length than our Boxer Briefs but aren't quite into Briefs, or for those of us that wish we were more active and equally enjoy the feeling of supportive, barely there, ultra-soft underwear.

Whether you're working out or just lounging around the house, these Trunks will materially change your life.

ABOUT OUR TRUNKS

WHAT MAKES THEM KRAKATOA?

  • 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 then blend the MicroModal with 5% Spandex to allow for it to move with you.
  • Enjoy more room with a large front pouch that provides space and support for your cargo, with complete separation from your thighs. No need to adjust anymore.
  • Feel comfortable all day with a waistband that doesn't flip or fold.
  • And keep them longer with the peace of mind of our 52 Wash Guarantee.

WHAT'S GREAT FOR THE WEARER?

The Krakatoa Trunks are specifically designed for maximum comfort.
They work well for a variety of activities, from working out to lounging around, they can take on anything you throw at them. Once you make the decision to embrace this everyday luxury for your privates, getting dressed in the morning will never be the same again.

Great for: Walking, Hiking, Lifting, Exercising, Yoga, Lounging.

HEY ALEX, I HAVE QUESTIONS!

What should I know about the fit?

The Anti-Gravity Trunk is designed with a 2" inseam. The legs are designed to stay put, but can ride up a little depending on activities. The pouch is designed to be large enough to provide you room, while being double layered 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?

Our number one goal is that you're happy with your purchase.

If something doesn't fit right on your regular priced Krakatoa, let us know and we will make it right.

Try on a pair and make sure it's perfect in you. If it doesn't work for you, your first regular priced pair is covered.

After this first pair, all underwear must be unworn, unwashed, in the original condition and packaging that you received them for a refund.
If you bought multiple pairs, make sure you try ONLY ONE PAIR for fitting before you decide to use the rest.

INTRO PAIRS ARE FINAL SALE AND NOT RETURNABLE.

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've built a tough product with reinforced stitching that lays flat and the very best materials we could get our hands on.

That said, you should follow the care instructions.

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 before 52 washes or 12 months, we'll replace them for free.

  • A FABRIC TO OVERLOAD THE SENSES

    Your skin never felt a fabric so soft and welcoming before. Three times softer than cotton, our high-grade, environmentally-conscious MicroModal fabric will make you rethink cotton and synthetics forever.

  • A POUCH FOR ALL OF US

    Large, round, and deep support, without uncomfortable lift. Naturally odor resistant, it separates and cradles you, so you won't need to adjust anymore. Its double-panel construction keeps your privates more private.

  • A WAISTBAND THAT IS PURE LUXURY

    Smooth and soft to the touch, the unflippable waistband won't mark your skin and keep you comfortable all day. To complement the art outside the waistband, its interior has positive affirmations to get you going at every break.

4.9
Rated 4.9 out of 5 stars
Based on 1,126 reviews
Total 5 star reviews: 1k Total 4 star reviews: 73 Total 3 star reviews: 21 Total 2 star reviews: 10 Total 1 star reviews: 2
90%would recommend these products
Customer-uploaded media carousel. Press left and right arrows to navigate. Press space or enter to open more details.
Slide 1 selected
1,126 reviews
  • Alan T.
    Verified Buyer
    Yesterday
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    WOW!

    Perfect Fit. Easy to wear - Very comfortable

  • Ferdinand E.
    Verified Buyer
    2 days ago
    Anti-Gravity Trunks
    Reviewing
    Anti-Gravity Trunks
    Rated 5 out of 5 stars
    Great underwear!

    Best trunks I've ever experienced!

  • Matt K.
    Verified Buyer
    3 days ago
    Anti-Gravity Trunks
    Reviewing
    Anti-Gravity Trunks
    Rated 5 out of 5 stars
    Excellent

    These are great. Tried both with a fly and without, but I would recommend without a fly more. Good fabric and just right waist band.

  • Brian T.
    Verified Buyer
    3 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Comfort and support

    Very comfortable all over. Comfortable waist band. I have thick thighs and the leg hole stretches to fit with no roll up. Pouch is supportive, nothing falls out. Will buy more.

  • Ross S.
    Verified Buyer
    3 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Great undies!

    Very soft, stretchy and comfortable and fit great!

  • Troy H.
    Verified Buyer
    4 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Just great!

    Awesome fit, comfort! Ready to get more!

  • Wayne Bailey i.
    Verified Buyer
    4 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Great

    Nice boxers love how the waist band doesn't fold over.

  • Karl W.
    Verified Buyer
    5 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Great underwear!!

    The fabric is excellent!

  • Mackie W.
    Verified Buyer
    5 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Love these underwear!

    Super comfy, great fit, soft and flexible and pretty sexy. Keeps everything together(yet separate in a good way)so it feels great and looks hot.

  • Scott W.
    Verified Buyer
    6 days ago
    INTRO PAIR TRUNK
    Reviewing
    INTRO PAIR TRUNK
    Rated 5 out of 5 stars
    Very Impressed !!

    I am very impressed by the quality, the look and the feel. They are incredibly comfortable and breathable. I enjoy the fly design . I just have to watch getting too excited or I will pop out and show. I definitely will be a customer and want to try other designs and colors.

Reviews LoadedReviews Added