Front shot of Ottie Merino wool women&
Size chart of Ottie Merino women&

Women's Merino Brief

Sale price$42.00
🇦🇺 Proudly Australian Made + Ethical Clothing Australia Accredited

Psst... Our undies are individually wrapped in compostable polybags. So,  if you buy a bundle, open one, and the size isn't right you can return the unopened pairs for a partial exchange. Obviously, being undies, if they're worn we can't exchange or refund.


Imagine all the things that you love in our merino tees in the form of underwear.

Introducing the new Ottie Merino women's merino briefs. The softest and comfiest briefs you'll ever own, featuring a high-rise cut for full cheek coverage. Designed for hikers, travellers, mountain bikers, skiers—anyone that wants a high performing, breathable, and odour-free pair of undies. These merino wool briefs boast a cooler, lighter, and silkier feel thanks to our superfine 150gsm Australian merino wool combined with TENCEL™, a fibre spun from wood pulp, famous for its incredibly fine nanofibrils.

Ethically made in Australia (in Melbourne of course), these women's merino briefs are designed to elevate your adventure and keep your backside comfortable. 

Try a pair or buy a bundle.

- Australian merino, TENCEL™, Nylon, and Elastane blend—the best of ALL worlds in terms of performance, comfort, and durability. (45% merino, 45% TENCEL™, 5% nylon, 5% elastane)
- Available in small to xx/large (see size chart)
- 100% mulesing-free 
- Sweatshop-free!
- Made in Melbourne
Australian Made certified
- All the benefits of merino wool—odour resistant, moisture wicking, temperature regulating, super soft, biodegradable, and comfortable AF!
- Designed by hikers, for hikers (and climbers and runners and... whoever, really)

We charge a flat shipping rate of $9 Australia and New Zealand-wide. Spend over $125, get FREE shipping. Upgrade to express for $12.50.

Order dispatched within 1-2 business days.

Standard shipping will take 3-7 business days from dispatch. If you upgrade to express expect your order in 1-3 business days.

International orders are charged a $20 flat rate and will take 2-3 weeks.

You may see the name Fulfilster/Fulfilster Pty Ltd on your shipping confirmation or shipping label. Don't worry, that's just the company that fulfils our orders in Port Melbourne. It actually another business we run. 

Buy the wrong size? Change your mind? No worries at all.

Any dramas with your order, flick us an email and we'll sort it out. If you selected the wrong size or changed your mind we'll usually ask that you cover return shipping to us and that it arrives back in sellable condition. We'll then provide an exchange, credit, or refund—your choice.

As for the undies, due to the obvious hygiene reasons we can't do exchanges or change-of-mind returns on underwear that have been worn or tried on. Once it's out of the packaging and/or the swing tags are removed, they're yours.

However, if your undies are faulty or we have stuffed something up, of course our standard returns policy kicks in. Whatever the Australian Consumer Law says, we'll do as a minimum.

If you buy a bundle and try on 1 pair and the others remain in their packaging with swing tags attached, they'll be AOK to return or exchange those.

Customer Reviews

Based on 7 reviews
Fit: Runs Small
Activity: Other
not yet arrived

The auspost tracking states on 30th July that the shipping information has been received, no change since then. Are they stuck with you? or Aus Post?

Sarah Armstrong
Fit: Runs True to Size
Activity: Hiking
Great buy

Love this t shirt. Fits as it says it will, so soft. Love it.

Graeme Allan
Fit: Runs True to Size
Activity: Every Day Wear

Comfortable, true to size, drying quickly

Fit: Runs True to Size
Activity: Hiking

Very happy with the Ottie’s merino briefs I recently purchased - very comfortable, good fit, don’t roll or ride up - highly recommend them!

Ali Murphy
Nearly perfect

Love these knickers, but as the fabric warms up and stretches a little bit, the non binding legs get extremely non binding and go for a bit of a wander. I am sure most people can imagine where…….
I fixed that little issue by feeding very fine millinery elastic through the legs and tightening that until nothing wandered. Comfiest knickers I own now.

Thanks so so much for the 5 star review and for the brilliant feedback.

Our business has been built on customer feedback. The first merino tee was born through connecting with the Aussie hiking community - of which I am part - and understanding what folks want in the perfect merino tee. Then the same with our undies and thermals.

What this means is our products will never be set-and-forget. We're absolutely committed to improving and iterating them over time, as needed. That may bring to life new products, or upgraded versions of products.

Feedback like this gives us something to consider testing. Thank you so so much for sharing it. :)


Thanks this is a great product. So comfortable !

Lisa and Murphy
Softest well fitted merino undies for women!

So happy with the full brief with stretchy bands to make for extra comfort, so impressed with my new pair of adventure undies!!!


Not only are we Australian Made certified, we're Ethical Clothing Australia accredited.

When you choose Ottie Merino you're choosing to support local manufacturing and a supply chain when workers are paid properly and are treated well.


Our superfine merino wool is traceable and mulesing-free. Our merino fabric is knitted and dyed in Melbourne. And, importantly, it's comfy AF.

Our supply chain is RWS accredited.

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