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Anti-Gravity Trunks

  • $33.00
2" inseam, 95% MicroModal, Stay Flat Waistband
Free shipping in the US on orders over $75

About our trunks

Hey Alex, I Have Questions!

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.

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.

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.

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 accomodate 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.

We try our best to ship items the same day we receive your order. Shipping times can vary depending on your location. Inside the US you can expect to see your package between 3-5 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.

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

If something doesn't fit right, 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 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 a pack with multiple pairs, make sure you try ONLY one pair before you decide to use the rest.

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.

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.

Customer Reviews
5.0 Based on 41 Reviews
5 ★
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Filter Reviews:
Josh O.
United States United States
I recommend this product

Comfy ,but rides up

The underwear are soft and comfortable definitely hold a package in place with some buldge, but they ride up I wish I would’ve gone with the longer ones.

Krakatoa Underwear Anti-Gravity Trunks Review
Mario S.
United States United States

Love the fit

Love the fit and the pouch for the boys. Size Small fits perfect as M runs ba bit big. Thank you Karakatoa!

Krakatoa Underwear Anti-Gravity Trunks Review
United States United States
I recommend this product

Worth it

Love these. I've shopped around. Read the reviews. Bought a pair. Then ordered 4 more.

Mark M.
United States United States
I recommend this product

Super Comfortable

The fabric is super soft and the fit is perfect with plenty of room up front. I will be ordering more.

Peter F.
United States United States
I recommend this product

Great styling Trunks

Great value, awesome comfort, waist band that doesn’t roll, and a pouch that keeps the boys very happy- thank you!

Daniel F.
United States United States
I recommend this product

Comfy Crotch!

The boys are free to play. No binding restrictions. Super breathable light materials. Pliable, soft, and expensive waistband. I'm throwing out the old and ordering another set!

United States United States
I recommend this product

As advertised

Great fit and feel and in the style that looks best for my small frame.

Joel E.
United States United States
I recommend this product

Everything in its place!

I like my Krakatoas! When I first pulled them on I was concerned that the legs might be a little tight around the thighs, but as I wore them, they didn't feel tight at all. And the best thing is that they keep the boys from getting squished or sticking to my thighs. They are very comfortable!

Tomas F.
United States United States
I recommend this product

They definitely run smaller than...

I have 4 pairs of the boxer briefs, and so I thought I would try a pair of trunks. These definitely run smaller. The boxers I fit a large, but the large in these are slightly too small and ride up. They seem like they would be

alex r.
United States United States
I recommend this product

So comfortable

I was really surprised how much i loved these once i got them. There are a lot of brands out there to choose from, and they all make a lot of claims about being the best, but these are in my top 3 all time favorite pairs I've owned

Arnold B.
United States United States
I recommend this product

So Far So Good    

Feels great and handled well thru the first wash.

Paul B.
United States United States
I recommend this product

Good as advertised

Look and feel were good as it appeared. Happy to take the risk this time.

Joseph R.
United States United States
I recommend this product

Comfort, style, fit and more

The boys are very happy on these briefs. Light, comfortable, almost weightless, but you always feel your junk is fully supported and upfront.

Canada Canada
I recommend this product


Might I say these are the best underwear I have ever worn.. my friend Ryan s introduced these to me and I will be buying many many more pairs I have never had underwear fit so perfect on my thighs and around my package and bum.. thanks Krakatoa

Corey T.
United States United States
I recommend this product

The best underwear I’ve worn!

I can’t say enough good things about these underwear. They are the softest and most comfortable I’ve worn, and I really do love the extra space in the crotch. The waistbands are amazing and don’t fold over like other brands tend to do. They stay in place and did I mention they are soft and amazing?!

Andrew F.
United States United States
I recommend this product

These fit great

They sent me a new pair that fit fantastic. They fit well and don’t ride up. As I always say, the best thing you can say about a good pair of underwear is that you forget you have them on.

Joe L.
United States United States
I recommend this product

Almost perfect for me

5 stars for material, overall comfort, style and ordering/shipping. 4 stars for the pouch design (for me anyways). I know every body type is different, so this this opinion would vary from man to man; supports my berries very well, but I wish I had just a bit more room for my twig. I get a bit "bunched up". I purchased 1 pair and even with his I liked them so much I came back and purchased more. So I'd say they're almost perfect.

Aaron S.
United States United States
I recommend this product

Best underwear I've tried

Haven't worn these that many times, so I can't speak to durability, but they're already easily my favorite underwear I've worn, and I appreciate the quality guarantee. Shape and material are both incredible. Wish they had a fly and they're pricier than I'd usually go for, but neither factor is stopping them from resting at the top of my Favorite Underwear list by a fairly significant margin.

Joel M.
United States United States
I recommend this product

Best Underwear Ever

Really incredible fit and masculine, while being sexy. The feel of the fabric is perfect. The pouch is just right, perfectly cradles and accentuates. I’m buying more.

albert a.
United States United States
I recommend this product

Unbelievable underwear!

First let me start by saying how amazed I was at your customer service. Received my first pair of underwear and I mistakenly ordered the wrong size. Contacted your company and was greeted with an email from Alex whom I believe is the ceo. Not only did he replace the underwear that I mistakenly ordered, he included a gifted pair for somebody else to try his amazing undergarment. Not only are these the most comfortable underwear I've ever owned, Alex and his company are unmatched in customer service. What a pleasure dealing with a business professional. I highly recommend this product. Thank you so much for your time and understanding. Love your products