Do you offer Tall sizes?
We currently don't offer tall sizes, but are working on it. If you'd like to be notified when we launch, please leave us your email at the bottom of the page.
I'm not sure which size is right for me.

Every product page has a sizing chart with measurement guide to help you discover the size best suited for you. Size info is located under the price and also there is a separate tab called SIZE & FIT.

It is important to follow the size chart as closely as possible to avoid any unnecessary disappointment.

If in doubt, please contact us so we can help you save time on returns and lower our environmental impact, we are happy to assist with any questions via email at

Can I wear Karma Seaweed Underwear every day without a wash?

Well, this is awkward. But the short answer is yes. You could.

But that’s assuming you keep yourself clean. Catch our drift?

Unlike underwear made from pure cotton, or underwear containing polyester or nylon, Karma Seaweed Underwear is anti-bacterial and prevents any odour causing bacteria to settle onto the fabric. So yes, they can be worn for many days without a wash. That said, life happens, so use your judgment and refresh your Karma's with a quick hand wash and air dry as frequently as you require. Or at least hang them out to air sometime.

What about Karma Seaweed T-shirts?

Yes you can wear your Karma Seaweed T-shirts for several days without washing. The anti-microbial protection offered by the seaweed prevents bacteria settle onto the fabric and thereby prevents any odour. You can wear your T-shirt several days and nights without washing and they won't stink.

Having said that, it's best you air them every now and then. Like, wear one T-shirt during the day and another during night, and air them out in between rotations. That way you can go for several weeks in fact.

When I do wash my Karma Seaweed clothing, what are the care instructions?


Karma Seaweed clothing can be washed in a regular washing machine at a normal or cool temperature setting up to 60°C / 140°F. You can use regular detergent, and avoid fabric softener or products with bleach.

You can also hand wash, which can be easier and quicker when travelling. When done, squeeze out excess water but do not twist or wring.


After a wash lay your clothing flat on a towel or dry rack to air dry, flipping periodically. Do not leave directly in the sun to dry. You could tumble dry Karma Seaweed clothing, but we wouldn't. Tumble drying is never good for any type of garment.

Why doesn't the Karma Seaweed T-shirt smell bad, even if I wear it for days at a time?

To understand why Karma Seaweed doesn’t retain odor, it’s first important to understand why many shirts end up smelling after a wear or two. The sweat from your body doesn’t actually have any odor. But when it absorbs into materials like cotton or polyester, it becomes a breeding ground for bacteria - which is where those bad smells come from. Seaweed fiber doesn’t give sweat the opportunity to develop bacteria because it neutralizes them. There is a

To understand why Karma Seaweed clothes don't stink, we need to first understand why our clothes develop stink.

And to understand why our clothes stink, you must first understand why we stink.

OK, fine. Why do we stink? It all begins with sweat, of which humans have two kinds: eccrine and apocrine. Eccrine sweat is plentiful, watery, slightly salty, and it doesn’t really smell bad. You secrete it all over your body, unlike apocrine sweat, which only comes from glands in your pits and your groin. Apocrine sweat is the nasty stuff—a thick, oily fluid made up of fatty compounds.

But apocrine sweat still doesn’t stink on its own. Your skin’s microbiome—the cast of bacterial, fungal, and viral characters living on you right now—love to eat those fatty, oily compounds in apocrine sweat. And the molecular leftovers of that feeding frenzy are what stink. That’s how B.O. is made.

Those “odorous compounds,” as they call them in the biz, cling to the fibers in your clothes. And all of that watery eccrine sweat carries the compounds around your body and onto your clothes, exacerbating the stink.

Are you going to be releasing a women's line?
We plan to have women's clothes in the near future. Please sign up for our newsletter to stay up to date on this.
Are you going to be launching any new products?
Yes, we are always releasing new products and colors to our existing collection. Sign up to our mailing list for updates and first access to new releases!
Do you sell in any physical retail stores?
Currently, no. We may in the future but for now, we only sell online.
Do I have to pay taxes on my order?

International customers are responsible to pay any applicable inbound duties, taxes, and any other fees which your local Customs authority deems appropriate. These fees are paid to your local carrier or government and are not collected by Mahatma LTD and thus cannot be refunded.

We ship international packages DDU (duties and taxes unpaid), meaning that these fees are not included in the price of the goods you purchase from our website. All applicable fees must be paid by the recipient in order to receive the parcel. As we are unable to advise the amount of what these fees might be, we recommend contacting your country's customs office or tax agent for respective charges and rates on a package coming outside of your country.

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